249 results match your criteria: "Sichuan agriculture university[Affiliation]"

Yak (), a special breed of cattle on the Qinghai-Tibet Plateau, has low fertility due to nutritional deficiency, especially the trace elements. The steroid hormones estradiol (E2) and progesterone (P4) synthesized by yak follicular granulosa cells (BGCs) are involved in the entire reproductive process. In the present study, we investigated the effects of trace elements and vitamins on yak follicular GCs, including the cellular activity, the synthesis of E2 and P4, and the expression of genes related to steroid hormone synthesis.

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Article Synopsis
  • China is the leading producer of apples, making apple quality assessment crucial, particularly through the measurement of sucrose concentration (SC), which affects flavor and ripeness.
  • Traditional SC measurement methods are time-consuming and often destructive to the apples, highlighting the need for rapid, nondestructive techniques.
  • The study demonstrates that using fluorescence hyperspectral imaging systems (FHIS) combined with machine learning can effectively predict SC, with the best model achieving high accuracy, showcasing its potential for quality assessment in agriculture.
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This 6-week pilot study aimed to investigate the feasibility, perceived efficacy, and participation perspectives of a university campus stair climbing-based exercise snack (ES) intervention and to compare it to moderate-intensity continuous training (MICT). Healthy, young, inactive adults (age: 21.6 ± 2.

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Copper (Cu) is an essential trace element for living organisms. However, excessive exposure to Cu is harmful to male fertility. But the precise mechanisms are still unknown.

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Transportation, an unavoidable process in livestock farming, causes metabolic disorders in the body, which then lead to endocrine disruption, being immunocompromised, and growth suppression. Lipid metabolism dysregulation is a critical phenotype induced by transportation. The liver is a vital organ in lipid metabolism, with a role in both lipid synthesis and lipolysis.

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Identification and quantification of adulteration in collagen powder by terahertz spectroscopy - the effect of spectral characteristics on performance is considered.

Spectrochim Acta A Mol Biomol Spectrosc

February 2025

College of Mechanical and Electrical Engineering, Sichuan Agriculture University, Ya'an 625014, China; Sichuan Intelligent Agriculture Engineering Technology Research Center, Ya'an 625014, China. Electronic address:

Terahertz spectroscopy is an emerging rapid detection method that can be used to detect and analyze food quality issues. However, models developed based on various spectral characteristics of terahertz have shown different performances in food identification. Therefore, we preliminarily analyzed the effect of terahertz spectral characteristics on the identification and quantification of collagen powder adulterated with food powders (plant protein powder, corn starch, wheat flour) with the use of random forest (RF), linear discriminant analysis (LDA), and partial least squares regression (PLSR), and determined the spectral characteristics suitable for identification and quantitative analysis.

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  • The study focuses on improving the detection of large non-green-ripe citrus fruits, addressing issues of precision and generalization for various ripeness levels and varieties.
  • A new model called YOLOC-tiny, based on YOLOv7 and using EfficientNet-B0 for feature extraction, incorporates advanced techniques like the convolutional block attention module (CBAM) and a unique regression loss function to enhance accuracy and reduce data noise.
  • YOLOC-tiny achieves a mean average precision (mAP) of 83.0%, outperforming similar models, and shows great promise for deployment in fruit-picking robots with a high accuracy rate and fast processing speed.
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Evaluation of the activity and mechanisms of oregano essential oil against PRV in vivo and in vitro.

Microb Pathog

September 2024

College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, China; Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu, 611130, China. Electronic address:

Background: The Pseudorabies Virus (PRV) leading to pseudorabies and causes huge economic losses in pig industry. The development of novel PRV variations has diminished the efficacy of traditional vaccinations, and there is yet no medication that can stop the spread of PRV infection. Therefore, PRV eradication is challenging.

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  • Solar water evaporation harnesses sunlight to produce freshwater, but effective photothermal materials are needed due to water's poor solar absorption.
  • A new material called wood biochar monolith (WBM), created by carbonizing wood at high temperatures, achieves over 100% light-to-vapor efficiency under low light conditions.
  • WBM's success comes from its efficient water transport and heat management, offering potential for low-cost desalination technologies suitable for remote areas with sunlight.
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Transcriptomic and physiological analysis provide new insight into seed shattering mechanism in Pennisetum alopecuroides 'Liqiu'.

Theor Appl Genet

June 2024

Institute of Grassland, Flower and Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China.

Through the histological, physiological, and transcriptome-level identification of the abscission zone of Pennisetum alopecuroides 'Liqiu', we explored the structure and the genes related to seed shattering, ultimately revealing the regulatory network of seed shattering in P. alopecuroides. Pennisetum alopecuroides is one of the most representative ornamental grass species of Pennisetum genus.

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Potassium (K) plays a role in enzyme activation, membrane transport, and osmotic regulation processes. An increase in potassium content can significantly improve the elasticity and combustibility of tobacco and reduce the content of harmful substances. Here, we report that the expression analysis of , a gene, increased markedly after low-potassium treatment (LK).

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Sunflower is an important crop, and the vitality and moisture content of sunflower seeds have an important influence on the sunflower's planting and yield. By employing hyperspectral technology, the spectral characteristics of sunflower seeds within the wavelength range of 384-1034 nm were carefully analyzed with the aim of achieving effective prediction of seed vitality and moisture content. Firstly, the original hyperspectral data were subjected to preprocessing techniques such as Savitzky-Golay smoothing, standard normal variable correction (SNV), and multiplicative scatter correction (MSC) to effectively reduce noise interference, ensuring the accuracy and reliability of the data.

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The most significant and sensitive antigen protein that causes diarrhea in weaned pigs is soybean 7S globulin. Therefore, identifying the primary target for minimizing intestinal damage brought on by soybean 7S globulin is crucial. MicroRNA (miRNA) is closely related to intestinal epithelium's homeostasis and integrity.

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Sugar content is an essential indicator for evaluating crisp pear quality and categorization, being used for fruit quality identification and market sales prediction. In this study, we paired a support vector machine (SVM) algorithm with genetic algorithm optimization to reliably estimate the sugar content in crisp pears. We evaluated the spectral data and actual sugar content in crisp pears, then applied three preprocessing methods to the spectral data: standard normal variable transformation (SNV), multivariate scattering correction (MSC), and convolution smoothing (SG).

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In order to address the challenges of inefficiency and insufficient accuracy in the manual identification of young citrus fruits during thinning processes, this study proposes a detection methodology using the you only look once for complex backgrounds of young citrus fruits (YCCB-YOLO) approach. The method first constructs a dataset containing images of young citrus fruits in a real orchard environment. To improve the detection accuracy while maintaining the computational efficiency, the study reconstructs the detection head and backbone network using pointwise convolution (PWonv) lightweight network, which reduces the complexity of the model without affecting the performance.

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The aims of this study were (1) to determine how stair-climbing-based exercise snacks (ES) compared to moderate-intensity continuous training (MICT) for improving cardiorespiratory fitness (CRF), and (2) to explore whether ES could improve maximal fat oxidation rate (MFO) in inactive adults. Healthy, young, inactive adults (: 42, age: 21.6 ± 2.

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Molecular Regulatory Mechanism of Nano-Se Against Copper-Induced Spermatogenesis Disorder.

Biol Trace Elem Res

January 2025

College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu, 611130, Sichuan, China.

Selenium nanoparticle (Nano-Se) is a new type of selenium supplement, which can improve the deficiency of traditional selenium supplements and maintain its physiological activity. Due to industrial pollution and irrational use in agriculture, Cu overexposure often occurs in animals and humans. In this study, Nano-Se alleviated CuSO-induced testicular Cu accumulation, serum testosterone level decrease, testicular structural damage, and decrease in sperm quality.

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Codon usage bias and phylogenetic analysis of chloroplast genome in 36 gracilariaceae species.

Funct Integr Genomics

March 2024

College of Life Science, Sichuan Agriculture University, Ya'an, 625014, Sichuan, People's Republic of China.

Article Synopsis
  • Gracilariaceae is a group of large red algae that are economically important due to their high agar content and ecological value.
  • Analysis of 36 species from this group shows that their chloroplast genomes have a strong preference for AT-ending codons, influenced mainly by natural selection.
  • The study identifies common high-frequency and optimal codons, which could aid in future transgenic work to enhance protein yield and advance the classification of these algae.
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Potato is an important food crop. After harvest, these tubers will undergo a period of dormancy. Brassinosteroids (BRs) are a new class of plant hormones that regulate plant growth and seed germination.

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Copper Promotes LPS-Induced Inflammation via the NF-кB Pathway in Bovine Macrophages.

Biol Trace Elem Res

December 2024

College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, People's Republic of China.

Inflammation is a complex physiological process that enables the clearance of pathogens and repairing damaged tissues. Elevated serum copper concentration has been reported in cases of inflammation, but the role of copper in inflammatory responses remains unclear. This study used bovine macrophages to establish lipopolysaccharide (LPS)-induced inflammation model.

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A rice classification method for the fast and non-destructive differentiation of different varieties is significant in research at present. In this study, fluorescence hyperspectral technology combined with machine learning techniques was used to distinguish five rice varieties by analyzing the fluorescence hyperspectral features of Thai jasmine rice and four rice varieties with a similar appearance to Thai jasmine rice in the wavelength range of 475-1000 nm. The fluorescence hyperspectral data were preprocessed by a first-order derivative (FD) to reduce the background and baseline drift effects of the rice samples.

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  • The study aims to create a predictive model for postoperative neurological outcomes in patients with intracranial aneurysms by combining radiomics and deep learning techniques from CTA imaging data.
  • A total of 101 patients were analyzed, extracting numerous features from their scans, and three different predictive models were built: one based on radiomics, another on deep learning, and a combined model using both methods.
  • The models were validated and evaluated using various metrics, with the deep learning model showing promising performance based on feature selections and ensemble techniques.
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Copper is an essential trace element for animal. Excessive intake of copper will cause a large accumulation of copper in the body, especially in the liver, and induce hepatotoxicity, however, there are few studies on the effects of copper on hepatic mitochondrial biogenesis and mitochondrial dynamics. In this study, mice were treated with different doses of CuSO (0, 10, 20, and 40 mg/kg) for 21 and 42 days by gavage.

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