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2022

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Articles 61 - 90 of 11657

Full-Text Articles in Life Sciences

Tree Biomass – A Fragile Carbon Storage In Old-Growth Birch And Aspen Stands In Hemiboreal Latvia, Laura Ķēniņa, Didzis Elferts, Ieva Jaunslaviete, Endijs Bāders, Guntars Šņepsts, Āris Jansons Dec 2022

Tree Biomass – A Fragile Carbon Storage In Old-Growth Birch And Aspen Stands In Hemiboreal Latvia, Laura Ķēniņa, Didzis Elferts, Ieva Jaunslaviete, Endijs Bāders, Guntars Šņepsts, Āris Jansons

Aspen Bibliography

Birch (Betula pendula Roth, Betula pubescens Ehrh.) and European aspen (Populus tremula L.) stands dominate the deciduous forests of Northern Europe. Due to increasing forest protections, more deciduous stands will reach the old-growth stage. Thus, data on the carbon storage potential in such areas are essential. We aimed to establish a benchmark for carbon stocks of the main carbon pools in old-growth deciduous hemiboreal stands. Carbon pools were calculated from measurements in forty old-growth (104–148 years-old) deciduous stands in forests on fertile mineral soil. The carbon stock in these stands is distributed across tree biomass (~ 60%), mineral soil (~ …

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An Emerging Infectious Disease Surveillance Platform For The 21st Century, Eloy Ortiz, Alicia Juarrero Dec 2022

An Emerging Infectious Disease Surveillance Platform For The 21st Century, Eloy Ortiz, Alicia Juarrero

MANTER: Journal of Parasite Biodiversity

Current vector surveillance programs are insufficient for coping with the emerging infectious disease crisis. In particular, current practices do not deploy sufficient information technology (IT) tools to generate actionable insights that can inform interventions and contain and mitigate the spread of vector-borne diseases. VectorAnalytica has developed a highly configurable and adaptable IT platform that imports, harmonizes, and integrates a range of data sources. The state-of-the-art backend development allows users to fully appreciate and understand the complexity of infectious disease dynamics without having to resort to additional statistical and GIS software packages. The platform yields actionable insights into outbreak patterns of …

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Let Emerging Plant Diseases Be Predictable, Valeria Trivellone Dec 2022

Let Emerging Plant Diseases Be Predictable, Valeria Trivellone

MANTER: Journal of Parasite Biodiversity

A prevalent concept for colonization and evolution among plant pathogens and their hosts stems from a post-Darwinian paradigm rooted in the formalized assumption of “specialized parasitism.” Seminal studies on rust fungi of socioeconomic importance integrated such an evolutionary perspective driven by the assumption of strict coevolution among pathogens and their plant hosts. Following this fundamentally unfalsifiable assumption, theories regarding host-switching for parasites were dismissed. If colonization occurred, this process would depend upon the origin of specific and novel mutations that allow infections of previously unexploited hosts or host groups, the acquisition of a broader host range. After a specific mutation …

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Polyphenol Characterization And Antioxidant Capacity Of Multi-Species Swards Grown In Ireland—Environmental Sustainability And Nutraceutical Potential, Samuel Rapisarda, Nissreen Abu-Ghannam Dec 2022

Polyphenol Characterization And Antioxidant Capacity Of Multi-Species Swards Grown In Ireland—Environmental Sustainability And Nutraceutical Potential, Samuel Rapisarda, Nissreen Abu-Ghannam

Articles

Ruminant production systems are major contributors to greenhouse gases emissions, with animal feeding practices being the main cause for methane and nitrous oxide’s release. Although feeding animals forages has been proven to be more sustainable, traditional ryegrass monocultures still require a lot of input (e.g., fertilisers and pesticides). Multi-species swards, consisting of different swards, such as grasses, forage legumes and herbs, need less management and fertiliser, produce more dry matter, and also add a variety of phytochemicals into the animal diet. In particular, polyphenols have been associated with a positive impact on animal health and productivity. However, data on the …

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Faktor-Faktor Yang Mempengaruhi Perempuan Melakukan Pemeriksaan Dini Kanker Serviks : A Scoping Review, Prila Khairunnisa, Sudarto Ronoatmodjo, Sabarinah Prasetyo Dec 2022

Faktor-Faktor Yang Mempengaruhi Perempuan Melakukan Pemeriksaan Dini Kanker Serviks : A Scoping Review, Prila Khairunnisa, Sudarto Ronoatmodjo, Sabarinah Prasetyo

Jurnal Epidemiologi Kesehatan Indonesia

Berdasarkan laporan dari The Global Cancer Observatory (GLOBOCAN) 2020, kasus terbaru kanker serviks di Indonesia sebanyak 36.633 jiwa (17,2%) menempati posisi kedua setelah kanker payudara dan menempati posisi ketiga penyebab kematian akibat kanker. Secara nasional hanya sebanyak 8,3% perempuan usia 30-50 tahun yang melakukan pemeriksaan dini kanker serviks melalui metode Inspeksi Visual Asam Asetat (IVA test) dan kanker payudara dengan Periksa Payudara Sendiri (SADARI). Tujuan dari artikel ini adalah untuk mengkaji dan menemukan bukti berdasarkan faktor-faktor yang mempengaruhi pencegahan dini kanker serviks pada perempuan di Indonesia. Scoping Review digunakan untuk menafsirkan hasil sesuai dengan evidence based dengan menerapkan kriteria inklusi …

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Faktor-Faktor Yang Mempengaruhi Kejadian Stres Pada Tenaga Bantuan Kkp Kelas I Soekarno-Hatta Di Era Pandemi Covid-19 Tahun 2021, Rasya Cyka Prameswari, Syahrizal Syarif Dec 2022

Faktor-Faktor Yang Mempengaruhi Kejadian Stres Pada Tenaga Bantuan Kkp Kelas I Soekarno-Hatta Di Era Pandemi Covid-19 Tahun 2021, Rasya Cyka Prameswari, Syahrizal Syarif

Jurnal Epidemiologi Kesehatan Indonesia

Pekerja dapat mengalami stres, termasuk Tenaga Bantuan di Kantor Kesehatan Pelabuhan (KKP). Selama Pandemi COVID- 19, tenaga bantuan KKP melakukan pengawasan terhadap COVID-19. Dengan beban kerja yang dimiliki dan rasa lelah memungkinkan tenaga bantuan mudah merasakan stress. Penelitian bertujuan mengetahui faktor-faktor yang mempengaruhi kejadian stres pada Tenaga Bantuan KKP Kelas I Soekarno-hatta. Pada penelitian ini menggunakan desain studi analitik yaitu cross-sectional. 90 Tenaga Bantuan yang bertugas di KKP Kelas I Soekarno-Hatta sejak Januari sampai Oktober 2020 merupakan populasi penelitian. 74 diantaranya merupakan sampel penelitian dengan kriteria telah bertugas lebih dari 4 minggu. Teknik saturation sampling digunakan dalam pengambilan sampel. Variabel …

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Faktor-Faktor Yang Berhubungan Dengan Ventilator Associate Pneumonia Di Ruang Intensive Care Unit Rumah Sakit Umum Kabupaten Tangerang, Yesi Maria, Syahrizal Syarif Dec 2022

Faktor-Faktor Yang Berhubungan Dengan Ventilator Associate Pneumonia Di Ruang Intensive Care Unit Rumah Sakit Umum Kabupaten Tangerang, Yesi Maria, Syahrizal Syarif

Jurnal Epidemiologi Kesehatan Indonesia

Ventilator Associate Pneumonia yang sering disingkat VAP adalah terjadinya pneumonia pada pasien yang telah terpasang ventilasi mekanik dengan menggunakan endotrakhea tube (ETT) dengan durasi penggunaan minimal 48 jam. Pneumonia terjadi karena infeksi nosocomial yang umumnya didapatkan dari penggunaan ventilator di rumah sakit. Tujuan penelitian ini adalah untuk mengetahui faktor-faktor yang berhubungan dengan kejadian VAP pada pasien yang dirawat di ruang ICU Rumah Sakit Umum Kabupaten Tangerang. Metode penelitian ini menggunakan desain cross-sectional dengan menganalisis data skunder yaitu telaah rekam medis pasien sebanyak 120 responden. Chi square dan regresi logistik ganda digunakan sebagai uji statistik pada penelitian ini. Hasil penelitian menyatakan …

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Prevalence And Plasmid Profiles Of Enterobacteriaceae Isolates Obtained From Individuals With Asymptomatic Bacteriuria In Okada, Edo State, Nigeria, Osarumwense Precious Otote, Maureen Uchechukwu Okwu, Osazee Ekundayo Izevbuwa, Happy Ovuerhi Oferiofe Dec 2022

Prevalence And Plasmid Profiles Of Enterobacteriaceae Isolates Obtained From Individuals With Asymptomatic Bacteriuria In Okada, Edo State, Nigeria, Osarumwense Precious Otote, Maureen Uchechukwu Okwu, Osazee Ekundayo Izevbuwa, Happy Ovuerhi Oferiofe

Makara Journal of Science

Asymptomatic bacteriuria (ASB) is the presence of bacteria in apparently healthy individuals. Although, the prevalence varies widely with age, gender, and the presence or absence of genitourinary abnormalities, the detection of pathogenic bacteria in urine constitutes firm evidence of infection. The objectives of this study were to isolate members of the family Enterobacteriaceae from urine samples of research participants, and to determine the antibacterial susceptibility and plasmid profiles of the isolates. A total of 122 mid-stream urine samples consisting of 72 male and 50 female participants from selected primary and secondary schools were collected. The age of the participants used …

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Effects Of Riverine Barriers On Avian Evolution In The Amazon Basin, Andre Eugene Moncrieff Dec 2022

Effects Of Riverine Barriers On Avian Evolution In The Amazon Basin, Andre Eugene Moncrieff

LSU Doctoral Dissertations

The high biodiversity found in the Amazon Basin has long captivated the attention of naturalists and evolutionary biologists seeking to explain its origins. Early observations by Alfred Wallace highlighted the role of rivers in delimiting the geographic ranges of many species; furthermore, where rivers narrow towards their headwaters, he noted that some species cross rivers freely. A major goal of this dissertation is to investigate how these and other observations about riverine barriers might inform our understanding of how speciation unfolds in Amazonia. My approach involved generating genomic data with dense geographic sampling for manakins in the genus Lepidothrix, …

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Polycystin-1 Is A Crucial Regulator Of Bin1 Expression And T-Tubule Remodeling Associated With The Development Of Dilated Cardiomyopathy, Magda C Díaz-Vesga, Raúl Flores-Vergara, Jaime A Riquelme, Marcelo Llancaqueo, Gina Sánchez, Cecilia Vergara, Luis Michea, Paulina Donoso, Andrew F G Quest, Ivonne Olmedo, Zully Pedrozo Dec 2022

Polycystin-1 Is A Crucial Regulator Of Bin1 Expression And T-Tubule Remodeling Associated With The Development Of Dilated Cardiomyopathy, Magda C Díaz-Vesga, Raúl Flores-Vergara, Jaime A Riquelme, Marcelo Llancaqueo, Gina Sánchez, Cecilia Vergara, Luis Michea, Paulina Donoso, Andrew F G Quest, Ivonne Olmedo, Zully Pedrozo

Faculty, Staff and Student Publications

Cardiomyopathy is commonly observed in patients with autosomal dominant polycystic kidney disease (ADPKD), even when they have normal renal function and arterial pressure. The role of cardiomyocyte polycystin-1 (PC1) in cardiovascular pathophysiology remains unknown. PC1 is a potential regulator of BIN1 that maintains T-tubule structure, and alterations in BIN1 expression induce cardiac pathologies. We used a cardiomyocyte-specific PC1-silenced (PC1-KO) mouse model to explore the relevance of cardiomyocyte PC1 in the development of heart failure (HF), considering reduced BIN1 expression induced T-tubule remodeling as a potential mechanism. PC1-KO mice exhibited an impairment of cardiac function, as measured by echocardiography, but no …

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Prognostic Model For Predicting Overall And Cancer-Specific Survival Among Patients With Superficial Spreading Melanoma: A Seer Based Study, Qiang Ji, Jun Tang, Shulian Li, Junjie Chen Dec 2022

Prognostic Model For Predicting Overall And Cancer-Specific Survival Among Patients With Superficial Spreading Melanoma: A Seer Based Study, Qiang Ji, Jun Tang, Shulian Li, Junjie Chen

Faculty, Staff and Student Publications

Skin malignant melanoma is one of the most aggressive skin tumors. Superficial spreading melanoma (SSM) is the most common histological type, which can originate from different body skin sites, and some patients can still accumulate regional lymph nodes and even have distant metastasis in some cases. This study used the relevant data from the monitoring, epidemiology and results database of the National Cancer Institute database to study the overall survival (OS) and cancer-specific survival (CSS) of SSM patients and established an SSM nomogram to evaluate the prognosis of patients. A total of 13,922 patients were collected from the monitoring, epidemiology …

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Tinjauan Literatur : Stunting Saat Balita Sebagai Salah Satu Faktor Risiko Penyakit Tidak Menular Di Masa Depan, Henny Kurniati, Ratna Djuwita, Maulidya Istiqfani Dec 2022

Tinjauan Literatur : Stunting Saat Balita Sebagai Salah Satu Faktor Risiko Penyakit Tidak Menular Di Masa Depan, Henny Kurniati, Ratna Djuwita, Maulidya Istiqfani

Jurnal Epidemiologi Kesehatan Indonesia

Seseorang yang mengalami stunting saat balita cenderung memiliki tubuh yang lebih pendek dan memiliki risiko efek jangka panjang, yaitu menderita penyakit kronis yang berkaitan dengan gizi, rentan terhadap penumpukkan lemak tubuh, serta berisiko menderita diabetes melitus karena resistensi insulin dan beberapa penyakit tidak menular seperti hipertensi dan stroke. Oleh karena itu, penelitian ini dilakukan untuk menelaah secara ilmiah efek stunting yang terjadi pada seseorang saat balita terhadap penyakit tidak menular saat dewasa. Penelitian ini merupakan literature review dengan metode PICO (population, intervention, comparators and outcome). Database elektronik yang digunakan adalah Embase, Proquest dan lib.ui didapatkan sebanyak lima artikel dan …

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Faktor - Faktor Yang Berhubungan Dengan Kematian Pasien Covid-19 Lansia Di Ruang Rawat Inap Rsud Kabupaten Karanganyar, Soraya Hidayati, Nurhayati Adnan Prihartono Dec 2022

Faktor - Faktor Yang Berhubungan Dengan Kematian Pasien Covid-19 Lansia Di Ruang Rawat Inap Rsud Kabupaten Karanganyar, Soraya Hidayati, Nurhayati Adnan Prihartono

Jurnal Epidemiologi Kesehatan Indonesia

Virus COVID-19 terus menyebabkan lebih banyak orang menjadi sakit dan meninggal dunia setiap harinya. Selain itu, varian virus COVID-19 baru juga terus ditemukan. Lebih dari 80% kematian karena COVID-19 terjadi pada penderita yang memiliki komorbid dan berusia di atas 65 tahun. Perlu diketahui penyakit komorbid apa saja yang berpengaruh terhadap kematian pasien COVID- 19 lansia. Tujuan penelitian ini adalah untuk mengetahui faktorfaktor yang dapat meningkatkan risiko kematian COVID-19 pada pasien lansia yang melakukan rawat inap di RSUD Karanganyar mulai Januari 2020 - Mei 2021. Sebanyak 322 pasien COVID-19 lansia yang terdata dalam file database rekam medis pasien rawat inap di …

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Faktor-Faktor Yang Berhubungan Dengan Kejadian Stroke Pada Penduduk Usia >15 Tahun Di Provinsi Daerah Istimewa Yogyakarta (Analisis Riskesdas 2018), Vika Azzahra, Sudarto Ronoatmodjo Dec 2022

Faktor-Faktor Yang Berhubungan Dengan Kejadian Stroke Pada Penduduk Usia >15 Tahun Di Provinsi Daerah Istimewa Yogyakarta (Analisis Riskesdas 2018), Vika Azzahra, Sudarto Ronoatmodjo

Jurnal Epidemiologi Kesehatan Indonesia

Menurut Riset Kesehatan Dasar (Riskesdas) 2013, prevalensi stroke pada penduduk usia >15 tahun di Indonesia sebesar 7 permil dan mengalami kenaikan dari tahun 2007 yang sebesar 6 permil. Provinsi Daerah Istimewa Yogyakarta (DIY) menjadi provinsi dengan prevalensi stroke tertinggi kedua di Indonesia dan prevalensinya melebihi angka nasional yakni sebesar 10,3 permil pada tahun 2013. Tujuan studi ini untuk mengetahui faktor-faktor yang berhubungan dengan kejadian stroke pada penduduk usia >15 tahun di Provinsi DIY. Penelitian ini menggunakan desain cross-sectional dengan menganalisis data Riskesdas 2018 Provinsi DIY sebanyak 6695 responden. Chi square dan regresi logistik ganda digunakan sebagai uji statistik pada penelitian …

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Ecological Protection Alone Is Not Enough To Conserve Ecosystem Carbon Storage: Evidence From Guangdong, China, Lihan Cui, Wenwen Tang, Sheng Zheng, Ramesh P. Singh Dec 2022

Ecological Protection Alone Is Not Enough To Conserve Ecosystem Carbon Storage: Evidence From Guangdong, China, Lihan Cui, Wenwen Tang, Sheng Zheng, Ramesh P. Singh

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The increase in atmospheric CO2 caused by land use and land cover change (LUCC) is one of the drivers of the global climate. As one of the most typical high-urbanization areas, the ecological conflicts occurring in Guangdong Province warrant urgent attention. A growing body of evidence suggests LUCC could guide the future ecosystem carbon storage, but most LUCC simulations are simply based on model results without full consistency with the actual situation. Fully combined with the territorial spatial planning project and based on the land use pattern in 2010 and 2020, we have used the Markov and Patch-generating Land …

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Introduction, Anne Grauer Dec 2022

Introduction, Anne Grauer

Anthropology: Faculty Publications and Other Works

Paleopathology is a relatively new field that seeks to understand disease in the past. This chapter presents a brief history of the discipline and highlights the varied approaches adopted by contributors aligned with medical fields, anthropology and archaeology, and the biochemical sciences, to name a few. Advancements in methods and techniques, the contributions of technology, and the role that social theory plays in the development of hypotheses are discussed along with the importance of acknowledging and ameliorating critical ethical issues inherent to the field.

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The Impact Of Mutation Of Myelodysplasia-Related Genes In De Novo Acute Myeloid Leukemia Carrying Npm1 Mutation, Yi Wang, Andres E Quesada, Zhuang Zuo, L Jeffrey Medeiros, C Cameron Yin, Shaoying Li, Jie Xu, Gautam Borthakur, Yisheng Li, Chao Yang, Yasmin Abaza, Juehua Gao, Xinyan Lu, M James You, Yizhuo Zhang, Pei Lin Dec 2022

The Impact Of Mutation Of Myelodysplasia-Related Genes In De Novo Acute Myeloid Leukemia Carrying Npm1 Mutation, Yi Wang, Andres E Quesada, Zhuang Zuo, L Jeffrey Medeiros, C Cameron Yin, Shaoying Li, Jie Xu, Gautam Borthakur, Yisheng Li, Chao Yang, Yasmin Abaza, Juehua Gao, Xinyan Lu, M James You, Yizhuo Zhang, Pei Lin

Faculty, Staff and Student Publications

Background: The impact of gene mutations typically associated with myelodysplastic syndrome (MDS) in acute myeloid leukemia (AML) with NPM1 mutation is unclear. Methods: Using a cohort of 107 patients with NPM1-mutated AML treated with risk-adapted therapy, we compared survival outcomes of patients without MDS-related gene mutations (group A) with those carrying concurrent FLT3-ITD (group B) or with MDS-related gene mutations (group C). Minimal measurable disease (MMD) status assessed by multiparameter flow cytometry (MFC), polymerase chain reaction (PCR), and/or next-generation sequencing (NGS) were reviewed. Results: Among the 69 patients treated intensively, group C showed significantly inferior progression-free survival (PFS, p < 0.0001) but not overall survival (OS, p = 0.055) compared to group A. Though groups A and C had a similar MMD rate, group C patients had a higher relapse rate (p = 0.016). Relapse correlated with MMD status at the end of cycle 2 induction (p = 0.023). Survival of group C patients was similar to that of group B. Conclusion: MDS-related gene mutations are associated with an inferior survival in NPM1-mutated AML.

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A Monovalent Mt10-Cvb3 Vaccine Prevents Cvb4-Accelerated Type 1 Diabetes In Nod Mice, Mahima T. Rasquinha, Ninaad Lasrado, Meghna Sur, Kiruthiga Mone, Haowen Qiu, Jean-Jack Riethoven, Raymond A. Sobel, Jay Reddy Dec 2022

A Monovalent Mt10-Cvb3 Vaccine Prevents Cvb4-Accelerated Type 1 Diabetes In Nod Mice, Mahima T. Rasquinha, Ninaad Lasrado, Meghna Sur, Kiruthiga Mone, Haowen Qiu, Jean-Jack Riethoven, Raymond A. Sobel, Jay Reddy

Nebraska Center for Virology: Faculty Publications

Enteroviruses, which include Coxsackieviruses, are a common cause of virus infections in humans, and multiple serotypes of the group B Coxsackievirus (CVB) can induce similar diseases. No vaccines are currently available to prevent CVB infections because developing serotype-specific vaccines is not practical. Thus, developing a vaccine that induces protective immune responses for multiple serotypes is desired. In that direction, we created a live-attenuated CVB3 vaccine virus, designated mutant (Mt)10, that offers protection against myocarditis and pancreatitis induced by CVB3 and CVB4 in disease-susceptible A/J mice. Here, we report that the Mt10 vaccine protected against CVB4-triggered type 1 diabetes (T1D) in …

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Elucidating The Effect Of Iron Acquisition Systems In Klebsiella Pneumoniae On Susceptibility To The Novel Siderophore-Cephalosporin Cefiderocol, Lana Daoud, Farah Al-Marzooq, Carole Ayoub Moubareck, Akela Ghazawi, Timothy Collyns Dec 2022

Elucidating The Effect Of Iron Acquisition Systems In Klebsiella Pneumoniae On Susceptibility To The Novel Siderophore-Cephalosporin Cefiderocol, Lana Daoud, Farah Al-Marzooq, Carole Ayoub Moubareck, Akela Ghazawi, Timothy Collyns

All Works

BACKGROUND: Cefiderocol (CFDC) is a novel siderophore-cephalosporin, effective against multidrug-resistant Gram-negative bacteria. As it has a siderophore side chain, it can utilize iron acquisition systems for penetration of the bacterial outer membrane. We aimed to elucidate the role of siderophores and iron uptake receptors in defining Klebsiella pneumoniae susceptibility to CFDC. METHODS: Initially, 103 K. pneumoniae strains were characterized for susceptibility to different antibiotics including CFDC. CFDC minimum inhibitory concentrations (MIC) were determined in iron-depleted and iron-enriched conditions. Iron uptake genes including siderophores, their receptors, ferric citrate (fecA) and iron uptake (kfu) receptors were detected by PCR in all the …

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Rapid Bacterial And Fungal Successional Dynamics In First Year After Chaparral Wildfire, M. Fabiola Pulido-Chavez, James W. J. Randolph, Cassandra A. Zalman, Loralee Larios, Peter M. Homyak, Sydney I. Glassman Dec 2022

Rapid Bacterial And Fungal Successional Dynamics In First Year After Chaparral Wildfire, M. Fabiola Pulido-Chavez, James W. J. Randolph, Cassandra A. Zalman, Loralee Larios, Peter M. Homyak, Sydney I. Glassman

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The rise in wildfire frequency and severity across the globe has increased interest in secondary succession. However, despite the role of soil microbial communities in controlling biogeochemical cycling and their role in the regeneration of post-fire vegetation, the lack of measurements immediately post-fire and at high temporal resolution has limited understanding of microbial secondary succession. To fill this knowledge gap, we sampled soils at 17, 25, 34, 67, 95, 131, 187, 286, and 376 days after a southern California wildfire in fire-adapted chaparral shrublands. We assessed bacterial and fungal biomass with qPCR of 16S and 18S and richness and composition …

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Rapid Screening Of 57 Illegally Added Drugs For Uric Acid Lowering Medicinal And Edible Food By Modified Quechers Technology, Qi Yan, Xu Qing-Peng, Li Cong, Deng Xing-Fei, Li Jin-Qing Dec 2022

Rapid Screening Of 57 Illegally Added Drugs For Uric Acid Lowering Medicinal And Edible Food By Modified Quechers Technology, Qi Yan, Xu Qing-Peng, Li Cong, Deng Xing-Fei, Li Jin-Qing

Food and Machinery

Objective: This study aimed to establish a rapid screening method for 57 drugs illegally added to medicinal and edible food. Methods: Extracted samples were purified by QuEhERS pretreatment technology, and 57 kinds of illegal addition of drugs were separated by Waters BEH C18 column. Acetonitrile-water was used as a mobile phase for gradient elution. Mass spectrometry electrospray and multiple reaction monitoring (MRM) were used for detection and analysis. Results: The established method had good linearity, and the correlation coefficients (R2) of 57 kinds of illegal addition of drugs were all greater than 0.99. The limits of detection …

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Determination Of Eight Kinds Of Insecticides In Dairy Products By Dispersed Solid Phase Extraction-Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry, Yan Wan-Ying, He Min-Heng, Wen Heng, Liu Zhi-Peng, Yu Zhi-Cong Dec 2022

Determination Of Eight Kinds Of Insecticides In Dairy Products By Dispersed Solid Phase Extraction-Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry, Yan Wan-Ying, He Min-Heng, Wen Heng, Liu Zhi-Peng, Yu Zhi-Cong

Food and Machinery

Objective: To detect eight kinds of insecticides in dairy products (pure milk, fermented milk, milk powder) rapidly. Methods: A high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method based on dispersive solid phase extraction pre-treatment technology was established. The samples were extracted with acetonitrile-acetone solution (Vacetonitrile∶Vacetone=80∶20) in ultrasonic way, and the extraction solution was purified by Florisil, primary secondary amine and anhydrous MgSO4.After purification, the samples were analyzed by HPLC-MS/MS qualitatively and quantitatively in multi reaction monitoring (MRM) mode. Results: The correlation coefficient (r) of fenamiphos, imidacloprid, spinosad, dinotefuran, emamectin benzoate, methomyl, …

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Preparation Of Matrix Reference Material Of Amino- Mebendazole In Eel Muscle Powder, Luo Chun-Lian Dec 2022

Preparation Of Matrix Reference Material Of Amino- Mebendazole In Eel Muscle Powder, Luo Chun-Lian

Food and Machinery

Objective: A method for the preparation and determination of amino-mebendazole matrix reference material in eel muscle powder was established. Methods: A positive sample was obtained by culturing eels with mebendazole and was prepared into amino-mebendazole matrix reference material, which went through freeze-drying, vacuum packaging, and radiation sterilization in turn. And its homogeneity, stability, cooperative setting value, and uncertainty were examined. Results: This matrix reference material has good uniformity and can adapt to low temperatures, normal temperatures, long-distance transportation, and other environments. It can be stored for more than 12 months under -18 ℃. The characteristic value of …

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Identification Of The Age Of Baijiu Based On Two-Dimensional Correlation Near Infrared Spectroscopy, Zhou Tao, Zhang Zhi-Yong, Han Ning, Gao Wei, Jia Li-Yan Dec 2022

Identification Of The Age Of Baijiu Based On Two-Dimensional Correlation Near Infrared Spectroscopy, Zhou Tao, Zhang Zhi-Yong, Han Ning, Gao Wei, Jia Li-Yan

Food and Machinery

Objective: To avoid young liquor as old liquor and realize the discrimination of Baijiu age. Methods: The near infrared transmission spectra of Baijiu samples were collected by near infrared spectrometer, and the synchronous and asynchronous two-dimensional correlation spectra of Baijiu samples were constructed with the wine age as the external disturbance. On this basis, the autocorrelation spectrum of each sample was extracted, and the age discrimination model of Baijiu was established by combining Markov distance method. Results: The wave band from 1400 nm to 1800 nm contained the effective information about the changes of Baijiu samples on …

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Research On The Innovation Mechanism Of Online Food Safety Supervision From The Perspective Of Holistic Governance, Li Xi Dec 2022

Research On The Innovation Mechanism Of Online Food Safety Supervision From The Perspective Of Holistic Governance, Li Xi

Food and Machinery

Holistic governance theory is a new type of public management strategy, which helps to provide citizens with a seamless and non-separated holistic service governance scheme, and provides new ideas for food safety supervision. Based on the theory of holistic governance, this article proposes three levels of online food safety supervision, from the perspective of the integrity of supervision implementation to reconstruct the execution network, the integrity of the supervision body to reconfigure of the participating network, the integrity of the supervision accountability to reshape of the power and responsibility system.

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Intelligent Control Method Of End Effector Of Food Sorting Robot Based On Improved Inversion Control, Wei Shu-Cheng, Mo Guo-Zhi Dec 2022

Intelligent Control Method Of End Effector Of Food Sorting Robot Based On Improved Inversion Control, Wei Shu-Cheng, Mo Guo-Zhi

Food and Machinery

Objective: Solve the problems of poor positioning accuracy and low efficiency of end effectors in the sorting process of parallel food sorting robots. Methods: An intelligent control of the end-effector of a parallel food sorting robot combining fuzzy system, fuzzy neural network and inverse control algorithm was proposed. The modeling information was approximated by the fuzzy system, the unmodeled information was approximated and predicted by the fuzzy neural network, and the inversion control completed the control output. Finally, the experimental verification is carried out. Results: Compared with the traditional control method, the proposed control method had good …

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Food Packaging Design Based On Network Public Welfare Communication, Huang Qiu-Chen Dec 2022

Food Packaging Design Based On Network Public Welfare Communication, Huang Qiu-Chen

Food and Machinery

On the basis of analyzing the development of the concept of public welfare packaging, taking the commercial practices of public welfare packaging as examples, the advantages, current situation and problems of food packaging participating in public welfare were analyzed. The design idea of food packaging based on network public welfare communication was put forward. Food public welfare packaging should follow the design principles of commonweal, simplicity, interactivity and communication, and promote the continuous innovation by integrating new media, new materials, new technologies and new contexts, in order to improve public welfare packaging to better serve the enterprise's public welfare communication, …

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Research On The Identification Of Mildew Maize Kernels Using Spectral Variables And Color Features Of Hyperspectral Images, Li Wei, Zhao Xue-Qing, Liu Qiang Dec 2022

Research On The Identification Of Mildew Maize Kernels Using Spectral Variables And Color Features Of Hyperspectral Images, Li Wei, Zhao Xue-Qing, Liu Qiang

Food and Machinery

Objective: To identify mildew maize kernels accurately. Methods: A novel method to identify mildew maize kernels using spectral variables and color characteristics of hyperspectral images. Firstly, image segmentation, spectral variables and color features extraction were carried out on maize kernel images. Then, color features of maize kernel images were utilized to generate color histograms. Additionally, spectral variables and color histogram features were combined into a feature set. Finally, the distance functions were used to analyze the features in this feature set to identify mildew maize kernels. Results: For the proposed method, the maximum average identification deviation and …

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Optimization Of Preparation Of Conjugated Linoleic Acid By Alkali Isomerization Of Peanut Oil, Shen Qiu-Yun, Peng Qing-Jing Dec 2022

Optimization Of Preparation Of Conjugated Linoleic Acid By Alkali Isomerization Of Peanut Oil, Shen Qiu-Yun, Peng Qing-Jing

Food and Machinery

Objective: To obtain a promising production technique of conjugated linoleic acid (CLA). Methods: The alkali isomerization was used to prepare CLA from peanut oil. The relative content of linoleic acid in peanut oil was determined, and the effects of reaction time, reaction temperature, ratio of alcohol to oil and KOH dosage on the conversion of CLA were investigated. The preparation conditions were optimized by Box-Behnken test. Results: The peanut oil was rich in linoleic acid with a relative content of 27.85%. Therefore, peanut oil was a good raw material for the preparation of CLA. For the conversion …

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Isolation, Purification And Identification Of Ace Inhibitory Peptide From Paramisgurnus Dabryanus Protein, Dong Jing-Qi, He Ze-He, Tian Gui-Fang, Shao Juan-Juan, Wu Xiao-He Dec 2022

Isolation, Purification And Identification Of Ace Inhibitory Peptide From Paramisgurnus Dabryanus Protein, Dong Jing-Qi, He Ze-He, Tian Gui-Fang, Shao Juan-Juan, Wu Xiao-He

Food and Machinery

Objective: This study aimed to develop ACE inhibitory peptide of Paramisgurnus dabryanus.Methods: Ultrafiltration, Sephadex G-15 and RP-HPLC were used to isolate and purify ACE inhibitory peptides from the proteolysis products of P.dabryanus,and their structures were analyzed by HPLC-MS/MS. The inhibitory mode of purified ACE inhibitory peptide was analyzed by inhibition kinetics. Results: The amino acid sequence of ACE inhibitory peptide was Glu-Gly-HIS, the relative molecular weight was 341.2 Da, the IC 50 value was (17.89±3.28)μg/mL, and the purification ratio was 27.47. Conclusion: The inhibitory peptide of P. dabryanus is a competitive ACE inhibitory peptide.

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