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Articles 28171 - 28200 of 255952

Full-Text Articles in Life Sciences

Drug Modification Of Synaptic Plasticity At The Inhibitory Synapses Involving Gaba Neurons In The Ventral Tegmental Area, Jie Wu Mar 2024

Drug Modification Of Synaptic Plasticity At The Inhibitory Synapses Involving Gaba Neurons In The Ventral Tegmental Area, Jie Wu

Theses and Dissertations

The neurobiological underpinnings of substance use disorders (SUDs) involve complex alterations in synaptic plasticity within the mesolimbic dopamine system, particularly within the ventral tegmental area (VTA). While dopamine neurons in the VTA are extensively studied in addiction research, less attention has been given to the plasticity exhibited by VTA GABAergic neurons, despite their established regulatory role in modulating dopamine cell activity. Building upon the ground-breaking work of Bocklisch et al. (2013), we investigated the plasticity at the GABAergic to VTA GABA neuron (VTA GABA-to-GABA) synapse utilizing whole-cell electrophysiology in GAD67 GFP knock-in mice. Our findings revealed an exceptionally rare duo-plasticity …

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Assessment Of The Genotoxic Effect Of Pesticide (Profenophos And Cypermethrin) On Allium Cepa L. Through Comet Assay, Ali Hasnian, Muhammad Rizwan, Hamed Dadkhah-Aghdash ., Zahid Mehmood, Ayesha Iqbal, Zarbab Zulfiqar, Bin Yameen, Hafiz Naveed Anjum, Sohaib Muhammad, Muhammad Luqman, Andleeb Anwar Sardar, Muhammad Umer Farooq Mar 2024

Assessment Of The Genotoxic Effect Of Pesticide (Profenophos And Cypermethrin) On Allium Cepa L. Through Comet Assay, Ali Hasnian, Muhammad Rizwan, Hamed Dadkhah-Aghdash ., Zahid Mehmood, Ayesha Iqbal, Zarbab Zulfiqar, Bin Yameen, Hafiz Naveed Anjum, Sohaib Muhammad, Muhammad Luqman, Andleeb Anwar Sardar, Muhammad Umer Farooq

Journal of Bioresource Management

Pesticides are specially designed to control pests and help in increasing the yield of crops. This study aims to investigate the genotoxic effect of the major ingredients of commonly used pesticides (Profenophos and Cypermethrin) on Allium cepa L. in different regions of the province of Punjab, Pakistan. Profenophos and Cypermethrin pesticides are extensively used by local farmers. Six different dilutions of Profenophos and Cypermethrin pesticide ranging from, 0.5 ml/L, 1 ml/L, 1.5 ml/L, 2 ml/L, 2.5 ml/L and 3.0 ml/L were applied initially on seeds germination. Seeds grown in a 3.0 ml/L concentration showed a lower radical length percentage as …

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A Review On The Role Of Tomatoes In Pakistan's Agricultural Economy: Challenges And Strategies For White Fly (Bemisa Tabaci: Hemiptera) Management, Muhammad Wahid Khan, Zahid Hussain, Shahid Sattar, Fazal Maula Mar 2024

A Review On The Role Of Tomatoes In Pakistan's Agricultural Economy: Challenges And Strategies For White Fly (Bemisa Tabaci: Hemiptera) Management, Muhammad Wahid Khan, Zahid Hussain, Shahid Sattar, Fazal Maula

Journal of Bioresource Management

The largest sector of Pakistan's economy is agriculture. Tomatoes, considered both vegetables and fruits, are an essential part of the daily diet for people in the economy class as well as those with limited means, with per capita food consumption of 8.00 kg recorded in Pakistan. Tomatoes are a rich source of essential nutrients such as Vitamin C, A, and Iron, and naturally contain Lycopene, known for its antioxidant properties that can help prevent cancer. In Pakistan, tomato crops yield approximately 40 kg per acre, which is below the world average of 4.00 tons per acre. The Pakistan renowned tomato …

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Unlocking The Promise Of The ″Miracle Tree: A Review On Therapeutic Applications And Phytochemistry Of Moringa Oleifera L., Ali Zeeshan, Mubashrah Munir, Sehrish Sadia Mar 2024

Unlocking The Promise Of The ″Miracle Tree: A Review On Therapeutic Applications And Phytochemistry Of Moringa Oleifera L., Ali Zeeshan, Mubashrah Munir, Sehrish Sadia

Journal of Bioresource Management

Moringa oleifera, commonly known as the "miracle tree", has been used for centuries in traditional medicine and has recently garnered interest from the scientific community for its therapeutic potential. This review summarizes the current knowledge on the phytochemistry, nutritional composition, and medicinal properties of different parts of M. oleifera. The leaves, pods, bark, roots, seeds, and flowers contain various essential nutrients like vitamins, minerals, amino acids, antioxidants, and phytochemicals such as flavonoids, glucosinolates, and phenolic acids. These bioactive compounds confer anti-diabetic, anti-cancer, cardioprotective, anti-inflammatory, antimicrobial, immunomodulatory, anti-venom, and wound healing properties. Extracts and isolates from M. oleifera have shown …

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Exploring The Potential Of Alcohol-Fermenting Yeast Isolated From Heterotrigona Itama Stingless Bees For Beverage Production, Pimprapa Chaijak, Alisa Kongthong, Chiraprapha Maenpaa Mar 2024

Exploring The Potential Of Alcohol-Fermenting Yeast Isolated From Heterotrigona Itama Stingless Bees For Beverage Production, Pimprapa Chaijak, Alisa Kongthong, Chiraprapha Maenpaa

Makara Journal of Science

Mead, an ancient alcoholic beverage, relies on the indigenous microbial community in honey for alcohol fermentation. Nevertheless, data on the use of bee indigenous flora for mead production in Thailand are scarce. This investigation involved the isolation of alcohol-producing yeast strains from the Thai stingless bee species Heterotrigona itama. Subsequently, these isolated yeast strains were employed in mead fermentation with honey sourced from the same stingless bee species. Findings revealed that the yeast strain denoted as P03b, which was identified molecularly as Saccharomyces cerevisiae, exhibited the highest alcohol production of 13.53% ± 0.76%. Furthermore, the yeast strain P03b …

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Changing The Culture Of Ecology From The Ground Up, Elsa Abs, Moira Hough Mar 2024

Changing The Culture Of Ecology From The Ground Up, Elsa Abs, Moira Hough

Michigan Tech Publications

We are two early career soil ecologists in academia who entered the field of soil ecology with the goal of studying soil-climate feedbacks to make meaningful contributions to climate change mitigation. Although our training and research extensively focused on the effects of climate change on soil ecosystems, we were not trained during our PhD nor incentivized as postdocs to work on solutions for climate change mitigation. So the question we ask here is: Given the consensus among ecologists about the urgency of the climate crisis, why is our field not promoting more solutions-oriented research in training and practice? In this …

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Synthesis, Molecular Characteristics, And Antibacterial Assessment Of Marine Hydroid Aqueous Extract-Based Silver Bio-Nanoparticles, Fredryk Mandey, Aulia Rhamdani Arfan, Rugaiyah Andi Arfah Mar 2024

Synthesis, Molecular Characteristics, And Antibacterial Assessment Of Marine Hydroid Aqueous Extract-Based Silver Bio-Nanoparticles, Fredryk Mandey, Aulia Rhamdani Arfan, Rugaiyah Andi Arfah

Makara Journal of Science

This investigation aims to synthesize, analyze the molecularity, and test the ability of bacterial inhibition capability of silver nanoparticles that have been synthesized by simply mixing silver nitrate and aqueous extracts of marine natural products with and without the addition of amylum as a stabilizing agent. This research, with and without the addition of amylum as a stabilizing agent, obtained 39.0 and 55.2 mg of solids of round-shaped morphology silver nanoparticles with diameters of 87.9 and 103.0 nm., respectively. In addition, the antibacterial testing assay against Staphylococcus aureus and Escherichia coli showed some considerably good results. S. aureus with the …

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Effect Of Harvest Season On The Physical Properties, Fatty Acid Composition, And Volatile Compounds Of Roasted Cacao Beans, Amornrat Chumthong, Nuttarisa Limjumrern, Chutikarn Saensano, Pornthep Teerawattanapong, Aekkaraj Nualla-Ong, Adirek Rugkong, Rawee Chiarawipa Mar 2024

Effect Of Harvest Season On The Physical Properties, Fatty Acid Composition, And Volatile Compounds Of Roasted Cacao Beans, Amornrat Chumthong, Nuttarisa Limjumrern, Chutikarn Saensano, Pornthep Teerawattanapong, Aekkaraj Nualla-Ong, Adirek Rugkong, Rawee Chiarawipa

Makara Journal of Science

The prevailing climate is an important factor affecting the development of the physical quality and flavor of cacao (Theobroma cacao L.) beans. The influence of harvest seasons on the physical, chemical, and flavor characteristics of cacao beans from Nakhon Si Thammarat Province, southern Thailand, was assessed. Among cacao beans, those harvested in the rainy season (R) had the highest fresh and dry weights and the lowest bean count per 100 g (87.00 ± 2.83). Although the overall fat content remained relatively constant across harvest seasons, cacao beans harvested in R exhibited a significantly higher fatty acid (C16:0, C18:1, and …

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Demanda De Irrigação Para Frutíferas Sob Cenário De Mudanças Climáticas Utilizando-Se Inteligência Artificial / Irrigation Demand For Fruit Trees Under A Climate Change Scenario Using Artificial Intelligence, Rafael Battisti, Waldemiro Alcantara Da Silva Neto, Renaldo Martins Da Costa, Felipe Puff Dapper, Elvis Felipe Eli Mar 2024

Demanda De Irrigação Para Frutíferas Sob Cenário De Mudanças Climáticas Utilizando-Se Inteligência Artificial / Irrigation Demand For Fruit Trees Under A Climate Change Scenario Using Artificial Intelligence, Rafael Battisti, Waldemiro Alcantara Da Silva Neto, Renaldo Martins Da Costa, Felipe Puff Dapper, Elvis Felipe Eli

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Fruit growing, especially in family farming, has a significant income potential in small areas, but climate change is a major challenge. This study aimed to quantify the irrigation requirements for citrus, papaya, mango and passion fruit, in the Vão do Paranã region, Goiás state, Brazil. The climate data encompassed the observed periods from 1961 to 2020 and future scenarios from 2021 to 2100. The irrigation demand was obtained from the daily water balance, while the reference evapotranspiration (ETo) was estimated using the Penman-Monteith method and then compared with an artificial intelligence tool. The future scenarios indicated a higher increase for …

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Embracing Cancer Complexity: Hallmarks Of Systemic Disease, Charles Swanton, Elsa Bernard, Chris Abbosh, Fabrice André, Johan Auwerx, Dafna Bar-Sagi, Susan Bullman, James Degregori, Catherine Elliott, Ayelet Erez, Gerard Evan, Mark A Febbraio, Andrés Hidalgo, Mariam Jamal-Hanjani, Johanna A Joyce, Matthew Kaiser, Katja Lamia, Jason W Locasale, Sherene Loi, Ilaria Malanchi, Miriam Merad, Kathryn Musgrave, Ketan J Patel, Sergio Quezada, Jennifer A Wargo, Ashani Weeraratna, Eileen White, Frank Winkler, John N Wood, Karen H Vousden, Douglas Hanahan Mar 2024

Embracing Cancer Complexity: Hallmarks Of Systemic Disease, Charles Swanton, Elsa Bernard, Chris Abbosh, Fabrice André, Johan Auwerx, Dafna Bar-Sagi, Susan Bullman, James Degregori, Catherine Elliott, Ayelet Erez, Gerard Evan, Mark A Febbraio, Andrés Hidalgo, Mariam Jamal-Hanjani, Johanna A Joyce, Matthew Kaiser, Katja Lamia, Jason W Locasale, Sherene Loi, Ilaria Malanchi, Miriam Merad, Kathryn Musgrave, Ketan J Patel, Sergio Quezada, Jennifer A Wargo, Ashani Weeraratna, Eileen White, Frank Winkler, John N Wood, Karen H Vousden, Douglas Hanahan

Faculty, Staff and Student Publications

The last 50 years have witnessed extraordinary developments in understanding mechanisms of carcinogenesis, synthesized as the hallmarks of cancer. Despite this logical framework, our understanding of the molecular basis of systemic manifestations and the underlying causes of cancer-related death remains incomplete. Looking forward, elucidating how tumors interact with distant organs and how multifaceted environmental and physiological parameters impinge on tumors and their hosts will be crucial for advances in preventing and more effectively treating human cancers. In this perspective, we discuss complexities of cancer as a systemic disease, including tumor initiation and promotion, tumor micro- and immune macro-environments, aging, metabolism …

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Sans-Cnn: An Automated Machine Learning Technique For Spaceflight Associated Neuro-Ocular Syndrome With Astronaut Imaging Data, Sharif Amit Kamran, Khondker Fariha Hossain, Joshua Ong, Nasif Zaman, Ethan Waisberg, Andrew G Lee Mar 2024

Sans-Cnn: An Automated Machine Learning Technique For Spaceflight Associated Neuro-Ocular Syndrome With Astronaut Imaging Data, Sharif Amit Kamran, Khondker Fariha Hossain, Joshua Ong, Nasif Zaman, Ethan Waisberg, Andrew G Lee

Faculty, Staff and Student Publications

Spaceflight associated neuro-ocular syndrome (SANS) is one of the largest physiologic barriers to spaceflight and requires evaluation and mitigation for future planetary missions. As the spaceflight environment is a clinically limited environment, the purpose of this research is to provide automated, early detection and prognosis of SANS with a machine learning model trained and validated on astronaut SANS optical coherence tomography (OCT) images. In this study, we present a lightweight convolutional neural network (CNN) incorporating an EfficientNet encoder for detecting SANS from OCT images titled "SANS-CNN." We used 6303 OCT B-scan images for training/validation (80%/20% split) and 945 for testing …

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Cancer Biomarkers: Emerging Trends And Clinical Implications For Personalized Treatment, Antonio Passaro, Maise Al Bakir, Emily G Hamilton, Maximilian Diehn, Fabrice André, Giannis Mountzios, Charles Swanton, Solange Peters Mar 2024

Cancer Biomarkers: Emerging Trends And Clinical Implications For Personalized Treatment, Antonio Passaro, Maise Al Bakir, Emily G Hamilton, Maximilian Diehn, Fabrice André, Giannis Mountzios, Charles Swanton, Solange Peters

Faculty, Staff and Student Publications

The integration of cancer biomarkers into oncology has revolutionized cancer treatment, yielding remarkable advancements in cancer therapeutics and the prognosis of cancer patients. The development of personalized medicine represents a turning point and a new paradigm in cancer management, as biomarkers enable oncologists to tailor treatments based on the unique molecular profile of each patient's tumor. In this review, we discuss the scientific milestones of cancer biomarkers and explore future possibilities to improve the management of patients with solid tumors. This progress is primarily attributed to the biological characterization of cancers, advancements in testing methodologies, elucidation of the immune microenvironment, …

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Gpr56 In Gvl: Marker Or Mechanism?, Audra N Iness, Pavan Bachireddy Mar 2024

Gpr56 In Gvl: Marker Or Mechanism?, Audra N Iness, Pavan Bachireddy

Faculty, Staff and Student Publications

No abstract provided.

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Necked Keelback Fowlea Schnurrenbergeri (Kramer, 1977) In Northeastern Punjab, Pakistan, Mudassar Basri, Zohaib Nasar Mar 2024

Necked Keelback Fowlea Schnurrenbergeri (Kramer, 1977) In Northeastern Punjab, Pakistan, Mudassar Basri, Zohaib Nasar

Journal of Bioresource Management

The bar-necked keelback snake plays a vital ecological role as a natural pest controller, effectively regulating populations of fish, frogs, and rodents. Through their predatory behavior, they contribute significantly to maintaining ecological balance by managing the numbers of these smaller creatures, thereby contributing to the overall health of ecosystem. We have documented Fowlea schnurrenbergeri in the urban center of Tehsil Zafarwal and Dariyapur village, within Narowal district, Punjab. Previously, Sindh-Thatta represented the southeastern most known locality for this species in Pakistan. This study presents new insights into the distribution range of this less-frequently observed species.

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Bear Lake Session, Lawrence Culver, Ben Shaw, Wesley Matthis, Mario Harper Mar 2024

Bear Lake Session, Lawrence Culver, Ben Shaw, Wesley Matthis, Mario Harper

Spring Runoff Conference

No abstract provided.

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“Exploring The Involvement Of Sumo-1 Proteins In Diesel Particulate-Induced Activation Of Inflammasomes And Extracellular Release Of Inflammasome Components In Lung Epithelial Cells”., Nandini Bidarimath, Ranjeeth Kondati, Georrein Dupre, Dhruthi Mutyala, Manisha Takur Mar 2024

“Exploring The Involvement Of Sumo-1 Proteins In Diesel Particulate-Induced Activation Of Inflammasomes And Extracellular Release Of Inflammasome Components In Lung Epithelial Cells”., Nandini Bidarimath, Ranjeeth Kondati, Georrein Dupre, Dhruthi Mutyala, Manisha Takur

Student Presentations

Diesel particulate matter (DPM) is a form of human-made air pollution generated during the combustion process of heavy-duty diesel engines in various industrial sectors like agriculture, construction, maritime, and mining. Exposure to diesel particulate extract (DPE) in the workplace has been linked to inflammation and various lung diseases. Recent research has indicated that a reversible chemical modification process called SUMOylation, induced by SUMO-1, may play a crucial role in activating the inflammasome and causing programmed cell death (apoptosis)/Pyroptosis. However, the precise connection between DPE-induced SUMOylation and the activation of the inflammasome, apoptosis/pyroptosis remains unclear. To explore this further, experiments were …

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Molecular Detection Of Human And Dog Fecal Pollution In Pensacola, Florida, Logan Mccullers, Jodel Nicholas, Dave Bachoon Mar 2024

Molecular Detection Of Human And Dog Fecal Pollution In Pensacola, Florida, Logan Mccullers, Jodel Nicholas, Dave Bachoon

Graduate Research Showcase

Pensacola, Florida (USA), has a thriving coastal community that depends on its coastal areas for recreation, shellfish harvesting, and fisheries. However, increasing levels of fecal pollution pose a potential threat to the water quality of these coastal systems. Identifying the source and abundance of contaminants in these environments is critical to controlling fecal pollution in these areas. This study aimed to use Microbial Source Tracking techniques to determine the source of pollution in five sites (Bayou Texar Lower, Willard Norris Road Creek, Clear Creek Boat Ramp @ 87, Quinette River Boat Ramp and Pensacola Bay Bridge) in the Pensacola area. …

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"Environmental Perils: Pentachlorophenol, Tetrachlorohydroquinone, And Their Legacy", R. Kondati, N. Bidarimath, D. Mutyala, M. Thakur, W. C. Dorsey, S. Batra Mar 2024

"Environmental Perils: Pentachlorophenol, Tetrachlorohydroquinone, And Their Legacy", R. Kondati, N. Bidarimath, D. Mutyala, M. Thakur, W. C. Dorsey, S. Batra

Student Presentations

Pentachlorophenol (PCP), a chlorinated aromatic organic compound, has served various agricultural purposes, including as a pesticide, fungicide, herbicide, and insecticide, since its introduction in 1936. However, its usage faced prohibition by the United States government in 1984 due to recognized carcinogenic and toxic properties. Despite this, approximately 36 million utility poles across the country remain treated with PCP, posing a continued risk of exposure. Exposure to PCP primarily occurs through direct volatilization from treated surfaces, leading to potential inhalation or skin contact. Its persistence in the environment, with a half-life of up to 200 days in water and varying durations …

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Research Advances On The Association Between Human Milk Oligosaccharides And Infant Health, Jiang Yikang, Dong Ling, Liu Hongfei, Pan Lina, Hu Yibo, Peng Xiyang, Kang Wenli, Peng Xiaoyu, Wang Jiaqi, Li Wei Mar 2024

Research Advances On The Association Between Human Milk Oligosaccharides And Infant Health, Jiang Yikang, Dong Ling, Liu Hongfei, Pan Lina, Hu Yibo, Peng Xiyang, Kang Wenli, Peng Xiaoyu, Wang Jiaqi, Li Wei

Food and Machinery

Human milk oligosaccharides （HMOs） are a group of complex glycans in human milk and play an important role in promoting the growth and development of infants, and more than 200 kinds of HMOs have been identified so far. In this paper, the types and structures of HMOs and their roles in improving infant intestinal health, promoting immune system development and brain development were reviewed. The application status of HMOs was summarized, the possibility and necessity of industrial production and application of HMOs in the future were prospected.

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Research And Challenges Of Micropumps And Microvalves In Microfluidic Systems, Liu Linbo, Jiang Zhuo, Shen Xuanxuan, He Ye Mar 2024

Research And Challenges Of Micropumps And Microvalves In Microfluidic Systems, Liu Linbo, Jiang Zhuo, Shen Xuanxuan, He Ye

Food and Machinery

Microfluidic chips are driven by microfluidic pumps and controlled by microfluidic valves in microfluidic systems to achieve accurate manipulation of microfluidics. With the continuous improvement of microfluidic chip integration, liquid channels have become more complex and have smaller volumes. How to achieve fluid drive and control at the micro scale has become a key focus in chip design. The paper elaborates on the current research status, key technologies, and development trends of micro pumps and micro valves both domestically and internationally, aiming to provide reference and guidance for the development of related industries and technological research.

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Discovery, Preparation And Identification Of A New Type Of Oxyphenisatine Di（Acetate） Analogue In Dietary Supplement, Xia Jintao, Wu Wanqin, Zhu Songsong, Jiang Feng Mar 2024

Discovery, Preparation And Identification Of A New Type Of Oxyphenisatine Di（Acetate） Analogue In Dietary Supplement, Xia Jintao, Wu Wanqin, Zhu Songsong, Jiang Feng

Food and Machinery

Objective: To find, prepare and identify a new oxyphenisatine di（acetate） analogue. Methods: A suspected derivative of oxyphenisatine di（acetate） was found by high-performance liquid chromatography-quadrupole-time-of-flight-mass spectrometry during the routine screening of weight loss healthcare product. The compound was isolated and purified by column chromatography, and the possible structures were inferred from the information of isotope mass spectra, secondary ion mass spectra, one-dimensional and two-dimensional NMR spectra. Finally, all possible structures were prepared by de novo synthesis strategy, and their fine structures were confirmed by spectral comparison. Results： The compound was identified as 5-Cl oxyphenisatine di（acetate）, a new type of oxyphenisatine di（acetate）, …

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Optimization Of Culture Conditions For Maximum Viable Count Of Brevibacillus Laterosporus Based On Mtt Colorimetry And Response Surface Methodology, Song Peng, Li Lixiang, Zhao Biao, Wang Zele, Sun Xingxin Mar 2024

Optimization Of Culture Conditions For Maximum Viable Count Of Brevibacillus Laterosporus Based On Mtt Colorimetry And Response Surface Methodology, Song Peng, Li Lixiang, Zhao Biao, Wang Zele, Sun Xingxin

Food and Machinery

Objective: This study aimed to explore the optimal medium composition and culture conditions for obtaining the maximum viable count of Brevibacillus laterosporus. Methods: Based on establishing the correlation regression equation between the MTT colorimetric method and plate counting method, the optimal medium composition (carbon source, nitrogen source, inorganic salt) and fermentation conditions (initial pH, temperature, inoculation amount, KH2PO4) for obtaining the maximum viable count of B. laterosporus were optimized. Results: A significant linear correlation for viable count determination between MTT colorimetry and plate counting (R2>0.999) was found; Maltose, CaCl2, initial …

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Green Analysis Of Glyphosate And Its Metabolite Amino Methyl Phosphoric Acid In Tea, Li Beibei, Wang Wei, Jiang Feng, Wang Huixia, Chen Li Mar 2024

Green Analysis Of Glyphosate And Its Metabolite Amino Methyl Phosphoric Acid In Tea, Li Beibei, Wang Wei, Jiang Feng, Wang Huixia, Chen Li

Food and Machinery

Objective： This study aimed to develop an ion chromatography-tandem mass spectrometry (IC-MS/MS) for the analysis of glyphosate and its metabolite amino methyl phosphoric acid (AMPA) residues in tea without derivatization. Methods： Tea samples were ultrasonically extracted with 20 mmol/L NaOH aqueous solution and cleaned up by dispersive solid-phase extraction (150 mg primary-secondary amine (PSA), 15 mg C18, 15 mg graphitized carbon black (GCB)). The samples were separated on an ion chromatographic column AS11-HC-4 μm (2 mm×250 mm) by using an isometric elution procedure of 35 mmol/L aqueous solution of sodium hydroxide as mobile phase. A multiple reactions monitoring …

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Rice Fatty Acid Detection Method Combining Hyperspectral Technology With Improved Lssvm, Fu Juanjuan, Chen Chunru, Huang Zhenlin, Sun Feng Mar 2024

Rice Fatty Acid Detection Method Combining Hyperspectral Technology With Improved Lssvm, Fu Juanjuan, Chen Chunru, Huang Zhenlin, Sun Feng

Food and Machinery

Objective: To solve the problems of low accuracy and poor efficiency in the existing rice quality testing methods of food enterprises. Methods: Based on a hyperspectral data acquisition system, a fast and non-destructive detection method for stored rice quality was proposed, which combined an improved bacterial foraging algorithm and least squares support vector machine. By applying the improved bacterial foraging algorithm, the hyperparameters (regularization parameter and kernel parameter) of the least squares support vector machine were optimized to achieve rapid and non-destructive detection of rice quality. its performance was analyzed through experiments. Results: The proposed method can achieve rapid and …

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Rapid Determination Of Moisture Content Of High Cellulose And Lignin Materials By Near-Infrared Diffuse Reflectance Spectroscopy, Yao Li, Li Zongjun, Zhu Menjun, Dai Hairong, Li Xiaoyan Mar 2024

Rapid Determination Of Moisture Content Of High Cellulose And Lignin Materials By Near-Infrared Diffuse Reflectance Spectroscopy, Yao Li, Li Zongjun, Zhu Menjun, Dai Hairong, Li Xiaoyan

Food and Machinery

Objective: To establish a rapid method for moisture detection of high cellulose and lignin materials. Methods: The areca nut, a Chinese herbal medicine containing high cellulose and lignin, was selected. Use a near-infrared spectrometer to collect near-infrared diffuse reflectance spectra. Apply NIR Cal modeling software to preprocess the spectral data, select the optimal feature wavelengths, and use partial least squares (PLS) analysis to establish a quantitative model for areca nut moisture content. Results: A quantitative model for areca nut moisture content was acquired, with the coefficient of determination of 0.994 2, the root mean square of the calibration error (RMSEC) …

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Establishment And Experiment Verification Of Screw Thrust Model Of Spiral Robot For Granary, Zhao Xianfeng, Yin Qiang, Yu Junpeng, Yang Liu, Zhang Yonglin Mar 2024

Establishment And Experiment Verification Of Screw Thrust Model Of Spiral Robot For Granary, Zhao Xianfeng, Yin Qiang, Yu Junpeng, Yang Liu, Zhang Yonglin

Food and Machinery

Objective： To clarify the interaction mechanism model between screw and grain in grain pile depth, and to determine the mechanical characteristics of screw of spiral robot for granary at different speeds and depths, so as to provide the design basis for the motion control system. Methods： Using mathematical model, combining Janssen grain storage pressure theory and Janosi shear-displacement equation, the shear stress model was established, and then the thrust model of screw was derived from the shear stress model. Through the design and construction of the experimental device, the combination of different speed and pressure was used to carry out …

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Simulation Research On The Transfer And Collection Part Of Warehouse Bottom Surplus Grain Cleaning Device, He Yingzhen, Wang Mingxu, Wang Wei, Li Shubo Mar 2024

Simulation Research On The Transfer And Collection Part Of Warehouse Bottom Surplus Grain Cleaning Device, He Yingzhen, Wang Mingxu, Wang Wei, Li Shubo

Food and Machinery

Objective: To verify whether the structure design of the conveying part and the collecting part of the cleaning device designed for the surplus grain at the bottom of the cottage warehouse is reasonable, and to determine the key parameters of the device operation, so as to avoid the waste of procurement and manufacturing. Methods: Based on discrete element method, EDEM simulation software was used to simulate the operation effect of the transfer part and the collection part, and the drop rate was used as the evaluation parameter. Results: Through the observation and analysis of the simulation results, it was concluded …

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Simulation And Analysis Of Forced Air Precooling Performance Of Apples With Different Fruit Diameters, Tian Jinjin, Gu Xudong, Zhang Zhe, Zhu Zhiqiang, Ji Xian Mar 2024

Simulation And Analysis Of Forced Air Precooling Performance Of Apples With Different Fruit Diameters, Tian Jinjin, Gu Xudong, Zhang Zhe, Zhu Zhiqiang, Ji Xian

Food and Machinery

Objective: To analyze the effect of apples of different fruit diameters on differential pressure precooling under the same box. Methods: Based on the spherical analogy model and heat transfer theory, the CFD unsteady SST k-ω turbulence model was used to numerically simulate the differential pressure precooling of apples with different air supply air speed, temperature, box opening size and fruit diameter, and three different working conditions were selected for accuracy. The simulation scheme of mixed orthogonal test was used to discuss the effects of different factors and different fruit diameters on the cooling rate and pre-cooling uniformity. Results: …

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Study Of Quality Changes In High Moisture Wheat After Hot Air Drying, Fan Mengke, Chen Pengxiao, Liu Ye, Zhu Wenxue, Jiang Mengmeng, Zhang Yurong, Wang Xiaowan, Wu Jianzhang Mar 2024

Study Of Quality Changes In High Moisture Wheat After Hot Air Drying, Fan Mengke, Chen Pengxiao, Liu Ye, Zhu Wenxue, Jiang Mengmeng, Zhang Yurong, Wang Xiaowan, Wu Jianzhang

Food and Machinery

Objective: To study the effects of different drying processes on the quality of high moisture wheat. Methods: Investigates the changes of wheat quality under different drying processes in three dimensions: appearance quality, nutritional quality and processing quality. Three indicators, namely colour, wet gluten content and drying rate, were selected as response values and combined with response surface analysis to predict the optimal drying process for high moisture wheat. Results: Drying temperature was the main influencing factor. As the temperature increased, the colour of the wheat deepened, the crude protein content decreased, the wet gluten content decreased, the water absorption of …

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Phenolic Compositions And In Vitro Antioxidant Activities Of Tartary Buckwheat Wine Lees, Zhao Jiawei, Zheng Jia, Li Mao, Zhang Weijian, Yan Junlin Mar 2024

Phenolic Compositions And In Vitro Antioxidant Activities Of Tartary Buckwheat Wine Lees, Zhao Jiawei, Zheng Jia, Li Mao, Zhang Weijian, Yan Junlin

Food and Machinery

Objective: Explored the composition and content of phenolic compounds in tartary buckwheat wine lees, and study their antioxidant activity. Methods: Phenolic compounds in tartary buckwheat wine lees were analyzed by HPLC and LC-MS. And evaluating its antioxidant activity. Results: 7 phenolic compounds were identified from tartary buckwheat wine lees, including 5 flavonoids, with the highest content of rutin of （9.350±0.050） mg/g, followed by quercetin, isoquercetin, kaempferol-3-o-rutoside and kaempferol of two phenolic compounds. At 0.5 mg/mL, the scavenging rates of hydroxyl free radical, ABTS+ and DPPH free radical reached （73.29±0.09）%, （96.21±0.25）% and （82.55±0.68）%, respectively, with FRAP value of …

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