Life Sciences Commons^™

Longitudinal Changes In Vascular Stiffness And Heart Rate Variability Among Young Adults With Youth-Onset Type 2 Diabetes: Results From The Follow-Up Observational Treatment Options For Type 2 Diabetes In Adolescents And Youth (Today) Study, Amy S Shah, Laure El Ghormli, Samuel S Gidding, Kara S Hughan, Lorraine E Levitt Katz, Dorit Koren, Jeanie B Tryggestad, Fida Bacha, Barbara H Braffett, Silva Arslanian, Elaine M Urbina

Children’s Nutrition Research Center Staff Publications

Aims: (1) To describe changes in arterial stiffness and heart rate variability (HRV) over a 5-year interval, (2) examine changes by sex and race-ethnicity, and (3) evaluate the risk factors associated with the longitudinal changes in arterial stiffness and HRV.

Methods: Participants with youth-onset type 2 diabetes enrolled in the observational follow-up phase of the Treatment Options for Type 2 Diabetes in Adolescents and Youth (TODAY) clinical trial had arterial stiffness [(pulse wave velocity, augmentation index, brachial distensibility] and six indices of HRV measured 5 years apart. Multivariable linear regression models assessed risk factors associated with changes in the outcomes …

Belowground Mechanism Reveals Climate Change Impacts On Invasive Clonal Plant Establishment, Surendra Bam, Jacqueline P. Ott, Jack L. Butler, Lan Xu

Natural Resource Management Faculty Publications

Climate change and disturbance can alter invasion success of clonal plants by differentially affecting the clonal traits influencing their establishment as young plants. Clonal traits related to the vegetative reproduction of native Pascopyrum smithii and non-native Bromus inermis grass seedlings were evaluated under altered precipitation frequencies and a single grazing event. Pascopyrum smithii maintained similar vegetative reproduction under three simulated precipitation frequencies whereas B. inermis vegetative reproduction declined as precipitation became more intermittent. Vegetative reproduction of the non-native B. inermis was greater than the native P. smithii under all simulated precipitation frequencies except the most intermittent scenario. A single grazing …

Drought Imprints On Crops Can Reduce Yield Loss: Nature's Insights For Food Security, Peng Fu, Deepak Jaiswal, Justin M. Mcgrath, Shaowen Wang, Stephen P. Long, Carl J. Bernacchi

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The Midwestern “Corn-Belt” in the United States is the most productive agricultural region on the planet despite being predominantly rainfed. In this region, global climate change is driving precipitation patterns toward wetter springs and drier mid- to late-summers, a trend that is likely to intensify in the future. The lack of precipitation can lead to crop water limitations that ultimately impact growth and yields. Young plants exposed to water stress will often invest more resources into their root systems, possibly priming the crop for any subsequent mid- or late-season drought. The trend toward wetter springs, however, suggests that opportunities for …

Contributing Factors To Low Energy Availability In Female Athletes: A Narrative Review Of Energy Availability, Training Demands, Nutrition Barriers, Body Image, And Disordered Eating, Andrew R. Jagim, Jennifer Fields, Meghan K. Magee, Chad M. Kerksick, Margaret T. Jones

Faculty Scholarship

Relative Energy Deficiency in sport is experiencing remarkable popularity of late, particularly among female athletes. This condition is underpinned by low energy availability, which is a byproduct of high energy expenditure, inadequate energy intake, or a combination of the two. Several contributing factors exist that may predispose an athlete to low energy availability, and therefore a holistic and comprehensive assessment may be required to identify the root causes. The focus of the current narrative review is to discuss the primary contributing factors as well as known risk factors for low energy availability among female athletes to help practitioners increase awareness …

Examining The Relationship Between The Testate Amoeba Hyalosphenia Papilio (Arcellinida, Amoebozoa) And Its Associated Intracellular Microalgae Using Molecular And Microscopic Methods, Agnes K.M. Weiner, Billie Cullison, Shailesh V. Date, Tomáš Tyml, Jean Marie Volland, Tanja Woyke, Laura A. Katz, Robin S. Sleith

Biological Sciences: Faculty Publications

Symbiotic relationships between heterotrophic and phototrophic partners are common in microbial eukaryotes. Among Arcellinida (Amoebozoa) several species are associated with microalgae of the genus Chlorella (Archaeplastida). So far, these symbioses were assumed to be stable and mutualistic, yet details of the interactions are limited. Here, we analyzed 22 single-cell transcriptomes and 36 partially-sequenced genomes of the Arcellinida morphospecies Hyalosphenia papilio, which contains Chlorella algae, to shed light on the amoeba-algae association. By characterizing the genetic diversity of associated Chlorella, we detected two distinct clades that can be linked to host genetic diversity, yet at the same time show a biogeographic …

Effects Of Intertidal Position On The Capacity For Anaerobic Metabolism And Thermal Stress Response In The Common Acorn Barnacle, Balanus Glandula, Kyra Anderson

Master's Theses

Intertidal habitats are characterized by dynamic, tidally-driven fluctuations in abiotic and biotic factors. Many of the environmental stressors that vary across the intertidal (e.g., temperature, oxygen, food availability, predation pressure) are strong drivers of metabolic rate in ectotherms. As such, we predicted that there may be pronounced differences in the metabolic and stress physiology of conspecific sessile invertebrates occupying at different relative tidal heights. The common acorn barnacle Balanus glandula represents an ideal model organism in which to investigate the possibility of tidal height-dependent physiological differences, owing to their wide distribution in the intertidal zone and their eurytolerant nature. In …

Interdevice Reliability Of A-Mode Ultrasound To Measure Body Composition, Megan Bigler, Dale R. Wagner, R. Stephan Lowry

Kinesiology and Health Science Faculty Publications

A-mode ultrasound is a noninvasive, rapid method for measuring subcutaneous fat thickness and estimating body fat percentage (%BF). Validity and reliability of the BodyMetrix BX2000 A-mode ultrasound has been reported; however, this study aimed to compare results from two machines to determine interdevice reliability. Ultrasound measures were repeated with two BX2000 machines at 10 body sites (chest, biceps, triceps, scapula, lower back, hip, waist, thigh, calf, axilla) on 42 males of varying age and leanness (age: 28.6±11.9 y, BMI: 25.4±4.6 kg/m2). The intraclass correlation coefficients ranged from 0.939 to 0.998 with standard errors of measurement from 0.31 to 0.58 mm …

Sdsu Beef Day 2022 Complete Proceedings, Department Of Animal Science

SDSU Beef Day 2022 Summary Publication

This is the complete proceedings of the South Dakota State University, Department of Animal Science Beef Day 2022. The proceedings contain research presented on the following topics:
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Population Structure And Genetic Diversity Analysis In Sugarcane (Saccharum Spp. Hybrids) And Six Related Saccharum Species, Haizheng Xiong, Yilin Chen, San-Ji Gao, Yong-Bao Pan, Ainong Shi

Horticulture Faculty Publications and Presentations

Sugarcane (Saccharum spp. hybrids) is one of the most important commercial crops for sugar, ethanol, and other byproducts production; therefore, it is of great significance to carry out genetic research. Assessing the genetic population structure and diversity plays a vital role in managing genetic resources and gene mapping. In this study, we assessed the genetic diversity and population structure among 196 Saccharum accessions, including 34 S. officinarum, 69 S. spontaneum, 17 S. robustum, 25 S. barberi, 13 S. sinense, 2 S. edule, and 36 Saccharum spp. hybrids. A total of 624 polymorphic SSR …

Probiotics, Prebiotics, And Phytogenic Substances For Optimizing Gut Health In Poultry, Awad A. Shehata, Sakine Yalçın, Juan D. Latorre, Shereen Basiouni, Youssef A. Attia, Amr Abd El-Wahab, Christian Visscher, Hesham R. El-Seedi, Claudia Huber, Hafez M. Hafez, Wolfgang Eisenreich, Guillermo Tellez-Isaias

Poultry Science Faculty Publications and Presentations

The gut microbiota has been designated as a hidden metabolic 'organ' because of its enormous impact on host metabolism, physiology, nutrition, and immune function. The connection between the intestinal microbiota and their respective host animals is dynamic and, in general, mutually beneficial. This complicated interaction is seen as a determinant of health and disease; thus, intestinal dysbiosis is linked with several metabolic diseases. Therefore, tractable strategies targeting the regulation of intestinal microbiota can control several diseases that are closely related to inflammatory and metabolic disorders. As a result, animal health and performance are improved. One of these strategies is related …

Genetic Errors Of Immunity Distinguish Pediatric Nonmalignant Lymphoproliferative Disorders, Nmazuo W Ozuah, Jennifer E Agrusa, M Cecilia Poli, Tiphanie P Vogel, Natalia S Chaimowitz, Nicholas L Rider, Emily M Mace, Jordan S Orange, Jason W Caldwell, Juan C Aldave-Becerra, Stephen Jolles, Francesco Saettini, Hey J Chong, Asbjorg Stray-Pedersen, Helen E Heslop, Kala Y Kamdar, R Helen Rouce, Donna M Muzny, Richard A Gibbs, Zeynep H Coban-Akdemir, James R Lupski, Kenneth L Mcclain, Carl E Allen, Ivan K Chinn

Faculty, Staff and Student Publications

BACKGROUND: Pediatric nonmalignant lymphoproliferative disorders (PLPDs) are clinically and genetically heterogeneous. Long-standing immune dysregulation and lymphoproliferation in children may be life-threatening, and a paucity of data exists to guide evaluation and treatment of children with PLPD.

OBJECTIVE: The primary objective of this study was to ascertain the spectrum of genomic immunologic defects in PLPD. Secondary objectives included characterization of clinical outcomes and associations between genetic diagnoses and those outcomes.

METHODS: PLPD was defined by persistent lymphadenopathy, lymph organ involvement, or lymphocytic infiltration for more than 3 months, with or without chronic or significant Epstein-Barr virus (EBV) infection. Fifty-one subjects from …

Verticox: Vertically Distributed Cox Proportional Hazards Model Using The Alternating Direction Method Of Multipliers, Hongkai Xiong, Lucila Ohno-Machado

Faculty, Staff and Student Publications

The Cox proportional hazards model is a popular semi-parametric model for survival analysis. In this paper, we aim at developing a federated algorithm for the Cox proportional hazards model over vertically partitioned data (i.e., data from the same patient are stored at different institutions). We propose a novel algorithm, namely VERTICOX, to obtain the global model parameters in a distributed fashion based on the Alternating Direction Method of Multipliers (ADMM) framework. The proposed model computes intermediary statistics and exchanges them to calculate the global model without collecting individual patient-level data. We demonstrate that our algorithm achieves equivalent accuracy for the …

Repellency Of Wild Oregano Plant Volatiles, Plectranthus Amboinicus, And Their Essential Oils To The Silverleaf Whitefly, Bemisia Tabaci, On Tomato, Cyrane Pouët, Emilie Deletre, Béatrice Rhino

All Peer-Reviewed Publications

The Bemisia tabaci (Gennadius) whitefly is a major economically damaging pest of many crops such as tomato (Solanum lycopersicum L.). Pesticides are widely used to control B. tabaci while the use of aromatic plants is an alternative control method. The aim of this study was to assess the B.tabaci repellent effect of wild oregano, Plectranthus amboinicus (Lour.) Spreng, a widespread aromatic plant in the West Indies. We tested three origins of wild oregano, including northern, central, and southern Martinique (French West Indies). Our results showed that all essential oils of wild oregano had either masking properties or were true repellents—the …

Determining Yield Effects Of Simulated Stand Loss In Field Corn (Zea Mays), T. B. Towles, A. L. Catchot, J. Gore, D. R. Cook, M. A. Caprio, C. Daves, W. D. Crow, B. Thrash, B. Thrash, N. R. Bateman

Midsouth Entomologist

The corn borer complex, consisting of Diatraea grandiosella (Dyar), Ostrinia nubilalis (Hübner), and D. saccharalis (F.), poses a risk to field corn that is not protected through the use of foliar-applied insecticides or Bacillus thuringiensis (Bt) proteins incorporated into the plant's genetics. In the southern U.S., corn borers have been adequately controlled through the widespread planting of Bt corn hybrids. Refuge systems have been implemented to prevent the selection of Bt-resistant populations in target species. Historically, structured refuge compliance among corn producers has been low, leading to the commercialization of seed blended refugia in areas of the U.S. where cotton …

2018 Rice Insect Losses In The United States, N. R. Bateman, G. M. Lorenz, B. C. Thrash, J. Gore, M. O. Way, B. E. Wilson, L. A. Espino

Midsouth Entomologist

Estimated insect management costs and losses for multiple insect pests of rice during the 2018 growing season were compiled for 5 rice-producing states. Participating states included Arkansas, California, Louisiana, Mississippi, and Texas, accounting for approximately 90% of the rice grown in the US. Overall, insects accounted for more than $141 million in costs and losses during 2017, averaging $52.06 per acre. Rice water weevil and rice stink bug caused more yield loss, and cost more to control than all other insect pests across participating states.

2019 Rice Insect Losses In The United States, N. R. Bateman, G. M. Lorenz, B. C. Thrash, J. Gore, M. O. Way, B. E. Wilson, L. A. Espino, M. T. Vanweelden

Midsouth Entomologist

Estimates of the costs and losses associated with multiple insect pests of rice were compiled for 6 rice-producing states. Participating states included Arkansas, California, Florida, Louisiana, Mississippi, and Texas, accounting for approximately 90% of the rice grown in the US. Overall, insects accounted for nearly $269 million in costs and losses during 2019, averaging $113.43 per acre. Rice water weevil caused more yield loss than all other insect pests across all participating states, followed by rice stink bug and rice billbug.

2020 Rice Insect Losses In The United States, N. R. Bateman, G. M. Lorenz, B. C. Thrash, J. Gore, M. O. Way, B. E. Wilson, L. A. Espino, M. T. Vanweelden

Midsouth Entomologist

Insects have the potential to reduce quality and yield in rice throughout the US. It is important to document these reductions over time to determine shifts in control costs and pest densities. Estimates of the costs and losses associated with multiple insect pests of rice were compiled for 6 rice-producing states. Participating states included Arkansas, California, Florida, Louisiana, Mississippi, and Texas, which account for approximately 90% of the rice grown in the US. Overall, insects accounted for over $340 million in costs and losses during 2020, averaging over $120 per acre. Rice water weevil and rice stink bug accounted for …

Abstracts Of The 11th Annual Mississippi Association Of Entomologists, Nematologists, And Plant Pathologists Meeting, October 31 – November 1, 2022, Mississippi Association Of Entomologists, Nematologists, And Plant Pathologists

Midsouth Entomologist

No abstract provided.

Understanding Changes In Cassava Root Dry Matter Yield By Different Planting Dates, Crop Ages At Harvest, Fertilizer Application And Varieties, Rebecca Oiza Enesi, Stefan Hauser, Pieter Pypers, Christine Kreye, Meklit Tariku, Johan Six

All Peer-Reviewed Publications

Cassava is a perennial crop that can adapt to periods of drought at different times in a growing season, which permits scheduling planting and harvest to develop production systems supplying roots continuously. However, farmers plant and harvest cassava at the onset of rains which creates glut and results in unattractive root prices. Thus, farmers need to understand how cassava varieties respond to different planting dates and crop ages at harvest to be able to use opportunities in income generation that may arise from flexible planting and harvest dates resulting from price and dry matter (DM) variabilities. Thus, this study was …

The Period Of Insect Research In The Tropics: A Bibliometric Analysis, M. C. Moshobane, T. T. Khoza, S. Niassy

All Peer-Reviewed Publications

The International Journal of Tropical Insect Science (Int J Trop Insect Sci) is a peer-reviewed journal established in 1980 to promote insect science mainly in the tropics. This study aimed to provide a Bibliometric overview of Int J Trop Insect Sci publications and citations between 2012 and 2020, ending September 2020. A sample of 488 documents extracted from the Web of Science (WoS) was analysed using widely used bioclimatic indicators. The articles were written by 1726 authors. During this period, the most productive authors comprised S Roy, followed by S Ekesi, S Subramanian and M Tamo. The dominant keyword was …

Genetic Architecture Of Salt Tolerance In A Multi-Parent Advanced Generation Inter-Cross (Magic) Cowpea Population, Waltram Ravelombola, Ainong Shi, Boa-Lam Huynh, Jun Qin, Haizheng Xiong, Aurora Manley, Lingdi Dong, Dotun Olaoye, Gehendra Bhattarai, Bazgha Zia, Huda Alshaya, Ibtisam Alatawi

Horticulture Faculty Publications and Presentations

Background

Previous reports have shown that soil salinity is a growing threat to cowpea production, and thus the need for breeding salt-tolerant cowpea cultivars. A total of 234 Multi-Parent Advanced Generation Inter-Cross (MAGIC) lines along with their 8 founders were evaluated for salt tolerance under greenhouse conditions. The objectives of this study were to evaluate salt tolerance in a multi-parent advanced generation inter-cross (MAGIC) cowpea population, to identify single nucleotide polymorphism (SNP) markers associated with salt tolerance, and to assess the accuracy of genomic selection (GS) in predicting salt tolerance, and to explore possible epistatic interactions affecting salt tolerance in …

Evaluation Of Peat Blended With Pine Wood Components For Effects On Substrate Physical Properties, Nitrogen Immobilization, And Growth Of Petunia (Petunia X Hybrida Vilm.-Andr.), Ryan W. Dickson, Kalyn M. Helms, Brian E. Jackson, Leala M. Machesney, Jung Ae Lee

Horticulture Faculty Publications and Presentations

The first objective was to evaluate wood components for differences in nitrogen (N) immobilization and effects on substrate physical properties. The second objective was to evaluate peat substrates amended with pine wood components for effects on plant growth, shoot tissue N, and fertigation practices during production. Substrates consisted of a coarse sphagnum peat blended with four types of processed pine wood at rates of 15%, 30%, 45%, and 60% (by volume). For comparison, peat was also blended with an aged pine bark, perlite, and coconut coir. Nitrogen immobilization was measured for individual components, except perlite. Individual components and blended substrates …

Non-Escaping Frost Tolerant Qtl Linked Genetic Loci At Reproductive Stage In Six Wheat Dh Populations, Jingjuan Zhang, Md Shahidul Islam, Yun Zhao, Masood Anwar, Zaid Alhabbar, Maoyun She, Rongchang Yang, Angela Juhasz, Guixiang Tang, Jiansheng Cheng, Darshan L. Sharma, Nathan Height, Ben Biddulph, Hang Liu, Yanjie Jiang, Shengnan Zhai, Xin Hu, Junkang Rong, Yingquan Zhang, Yebo Qin, Qier Liu, Zitong Yu, Yujuan Zhang, Sadegh Balotf, Mirza Dowla, Sonia Afrin, Nandita Roy, Md Resad Mallik, Md Atik Us Saieed, Shanjida Rahman, Nigarin Sultana, Sarah Al-Sheikh Ahmed, Chris Florides, Kefei Chen, Meigin Lu, Jorge E. Mayer, Wujun Ma

Grain and Other Field Crops Research Articles

Reproductive stage frost poses a major constraint for wheat production in countries such as Australia. However, little progress has been made in identifying key genes to overcome the constraint. In the present study, a severe frost event hit two large-scale field trials consisting of six doubled haploid (DH) wheat populations at reproductive stage (young microspore stage) in Western Australia, leading to the identification of 30 robust frost QTL on 17 chromosomes. The major 18 QTL with the phenotype variation over 9.5% were located on 13 chromosomes including 2A, 2B, 2D, 3A, 4A, 4B, 4D, 5A, 5D, 6D, 7A, 7B and …

Tracking Cryptic Sars-Cov-2 Lineages Detected In Nyc Wastewater, Davida S. Smyth, Monica Trujillo, Devon A. Gregory, Marc C. Johnson, John J. Dennehy, Et Al.

Biology Faculty Publications (Archived)

Tracking SARS-CoV-2 genetic diversity is strongly indicated because diversifying selection may lead to the emergence of novel variants resistant to naturally acquired or vaccine-induced immunity. To monitor New York City (NYC) for the presence of novel variants, we deep sequence most of the receptor binding domain coding sequence of the S protein of SARS-CoV-2 isolated from the New York City wastewater. Here we report detecting increasing frequencies of novel cryptic SARS-CoV-2 lineages not recognized in GISAID’s EpiCoV database. These lineages contain mutations that had been rarely observed in clinical samples, including Q493K, Q498Y, E484A, and T572N and share many mutations …

Review Of The Invasive Forage Grass, Guinea Grass (Megathyrsus Maximus): Ecology And Potential Impacts In Arid And Semi-Arid Regions, Pushpa Soti, Vanessa Thomas

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Several introduced African grasses are known to present recurring patterns of invasiveness and cause a severe impact on the diversity and functioning of ecosystems worldwide. Megathyrsus maximus (Guinea grass), a forage grass species native to South Africa, is reported to be highly invasive and pose a serious threat to native biodiversity in the introduced range. Despite the severe ecological threats posed by M. maximus worldwide, there is a dearth of information on the ecological and agroecological impact of M. maximus when growing in unintended areas. In this review, we present general information on M. maximus, its distribution and ecological …

Fact Sheet - Human Settlements: Climate Change Impacts And Risks, Winston T. L. Chow, Richard Dawson, Bruce Glavovic, Marjolijn Haasnoot, Mark Pelling, William Solecki

Research Collection College of Integrative Studies

This regional factsheet on cities and human settlements gives a snapshot of the key findings of the Sixth Assessment Report: Climate Change 2022 - Impacts. Adaptation and Vulnerability, distilled from the relevant Chapters and Cross-Chapter Papers, the Technical Summary and the Global to Regional Atlas.

Style Of Meal Service And Feeding Practices Among Mexican American Fathers And Mothers: An Analysis Of Video-Recorded Children’S Evening Mealtime At Home, Carlos Penilla, Jeanne M Tschann, Lauri A Pasch, Elena Flores, Julianna Deardorff, Suzanna M Martinez, Nancy F Butte, Louise C Greenspan

Children’s Nutrition Research Center Staff Publications

The aim of this study was to examine video-recorded observations of evening family mealtime at home among Mexican American children to help elucidate style of meal service, fathers' and mothers' feeding practices and child's eating behavior. Consistent with guidelines for coding behaviors, we analyzed observational data of evening mealtimes of 71 Mexican American children aged eight to 10 years. Regarding style of meal service, in almost all cases (96%), parents plated the child's food, with more available on the table or counter in 40% of the observations. Mothers almost always served the child (94%). Regarding parental feeding practices, parents used …

Barriers In Surgical Research: A Perspective From The Developing World, Nadeem Ahmed Siddiqui, Muhammad Aanish Raees, Rehan Nasir Khan, Farhan Zafar

Department of Surgery Docs

Research in surgery has led to significant advances over the last century in terms of how medicine is practised in and outside the operating rooms today. Surgical research in the developed countries is responsible for most of this advancement, but it is often inapplicable in resource-limited settings in the developing world. Lower- and middle-income countries are in a unique position to take this work further, but they are limited by certain barriers. These barriers could broadly be classified under social and cultural, infrastructure, financial, ethical, and personal categories. These barriers are often not fully realised, but can potentially be addressed …

Role Of Simulation In Open Varicose Veins Surgery: A Systematic Review, Muhammad Ammar Pirzada, Fareed Ahmed Shaikh, Shoaib Badini, Nadeem Ahmed Siddiqui

Department of Surgery Docs

Objective: To assess the types and effectiveness of simulators present for open varicose vein surgery.
Methods: The systematic review was conducted at The Aga Khan University Hospital Karachi and comprised studies published from 1st January 2000 to 30th June 2020 related to open varicose vein surgical procedures done on simulators. Databases searched were PubMed, Medline, Google Scholar, Cochrane and Scopus using appropriate key words. The primary outcome of the review was to assess the effectiveness of different types of simulators used for varicose vein surgery.
Results: Of the 286 articles found, 6(2%) were included. A variety of simulators ranging from …

Should Panelists Refrain From Wearing A Personal Fragrance Prior To Sensory Evaluation? The Effect Of Using Perfume On Olfactory Performance, Thadeus L. Beekman, Kaushik Luthra, Shady Afrin Jeesan, Rebecca Bowie, Han-Seok Seo

Food Science Faculty Publications and Presentations

It is typically recommended that panelists should refrain from wearing personal fragrances, such as perfume or cologne, prior to sensory evaluation. Interestingly, no study has been reported as to whether panelists' perceptions of test samples could be affected by personal fragrances worn by themselves. The objective of this study was, therefore, to determine the effect of such a personal fragrance on olfactory performance. Nineteen untrained participants were screened, recruited for, and underwent the Sniffin' Sticks test designed for measuring olfactory performances that included the odor threshold, discrimination, and identification (TDI). The olfactory performance tasks were conducted under three fragrance level …