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Metabolic characteristics and nutrient utilization in high-feedefficiency pigs selected using different feed conversion ratio models

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Science China(Life Sciences) 2019年第7期62卷 959-970页

作者： Beibei He Tiantian Li Wei Wang hang gao Yu Bai Shuai Zhang Jianjun Zang Defa Li Junjun Wang Beijing Advanced Innovation Center for Food Nutrition and Human Health College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

An understanding of the nutrient utilization characteristics of pigs with different feed efficiencies(FEs) will help us to develop new strategies to reduce the costs of pig *** this study,we selected pigs with a range of FEs according to two feed conversion ratio models: the feed intake(FI) model,where pigs had the same average daily gains(ADGs) but different FIs,and the ADG model,where pigs had the same FIs but different ***-FE pigs had a higher abundance of short chain fatty acid(SCFA)-producing bacteria(Lachnospiraceae,Clostridiaceae1,and Coriobacteriaceae) in their caecum in the FI model,and low-FE pigs had a higher abundance of two families(BacteroidalesS247group and Peptococcaceae) and two genera(Anaerotruncus and CandidatusSoleaferrea) in both *** contrast,high-FE pigs had more goblet cells and higher m RNA expression of insulin-like growth factor 1(IGF-1) in the FI model,and higher mRNA expression of occludin but lower expressions of adenosine monophosphate-activated protein kinase(AMPK)-α2 and peroxisome proliferator-activated receptor gamma coactivator 1 alpha(PGC1α) in the ADG *** findings suggest that the presence of SCFA-producing bacteria in the caecum and increased muscular growth may contribute to the high FE of low-FI pigs,while improved intestinal functions and decreased mitochondrial activity in the skeletal muscle are related to the high FE of high-ADG pigs.

关键词： feed efficiency caecum microbiota intestinal functions muscle growth and mitochondrial activity growing pigs

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Channel pruning on frequency response

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Science China(Information Sciences) 2025年第1期68卷 159-170页

作者： hang LIN Yifan PENG Lin BIE Chenggang YAN Xibin ZHAO Yue gao School of Software Tsinghua University School of Automation Hangzhou Dianzi University

Network pruning has a significant role in reducing network parameters and accelerating the inference time of the network. Some existing methods prune the network based on the frequency of the data, and finally obtain a sub-network with high accuracy. However, according to our experimental analysis, different frequencies of information in the data contribute differently to the accuracy of the model, and using this information directly for pruning without making a selection will lead to incorrect results. We believe that pruning should retain the convolutional kernels in the network that process important information, while those kernels that process unimportant information should be removed. In this paper, we first investigate the meaning of each frequency band information in the spectrum and their contribution to the prediction accuracy of the network,and according to these results, we propose a new pruning method based on frequency response(PFR). Our PFR finds and removes the convolutional kernels in the network that specialize in processing unimportant information, resulting in a compact neural network model. PFR obtains significant experimental results on different datasets, for example, a 56.0% raduction of float points operations(FLOPs) on Res Net-50 and only 0.37% of Top-1 accuracy degradation on the Image Net dataset.

关键词： deep learning model compression filter pruning channel pruning frequency response

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Investigation of the trajectory uniformity in water dissolution ultraprecision continuous polishing of large-sized KDP crystal

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International Journal of Extreme Manufacturing 2020年第4期2卷 48-56页

作者： Zhipeng Cheng hang gao Ziyuan Liu Dongming Guo Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education Dalian University of TechnologyDalian 116024 People’s Republic of China

Large-sized potassium dihydrogen phosphate(KDP)crystals are an irreplaceable nonlinear optical component in an inertial confinement fusion *** by the size,previous studies have been aimed mainly at the removal principle and surface roughness of small-sized KDP crystals,with less research on *** to its low surface damage and high machining efficiency,water dissolution ultraprecision continuous polishing(WDUCP)has become a good technique for processing large-sized KDP *** this technique,the trajectory uniformity of water droplets can directly affect the surface quality,such as flatness and ***,uneven trajectory distribution of water droplets on the surface of KDP crystals derived from the mode of motion obviously affects the surface *** this study,the material removal mechanism of WDUCP was introduced.A simulation of the trajectory of water droplets on KDP crystals under different eccentricity modes of motion was then ***,the coefficient of variation(CV)was utilized to evaluate the trajectory ***,to verify the reliability of the simulation,some experimental tests were also conducted by employing a large continuous *** results showed that the CV varied from 0.67 to 2.02 under the certain eccentricity mode of motion and varied from 0.48 to 0.65 under the uncertain eccentricity mode of *** CV of uncertain eccentricity is always smaller than that of certain ***,the uniformity of trajectory was better under uncertain *** the mode of motion of uncertain eccentricity,the initial surface texture of the100 mm×100 mm×10 mm KDP crystal did achieve uniform *** surface root mean square roughness was reduced to 2.182 nm,and the flatness was reduced to 22.013μ***,the feasibility and validity of WDUCP for large-sized KDP crystal were verified.

关键词： potassium dihydrogen phosphate crystal water dissolution ultraprecision continuous polishing trajectory uniformity flatness

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Semi-implantable device based on multiplexed microfilament electrode cluster for continuous monitoring of physiological ions

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Bio-Design and Manufacturing 2024年第1期7卷 88-103页

作者： Shuang Huang Shantao Zheng Mengyi He Chuanjie Yao Xinshuo Huang Zhengjie Liu Qiangqiang Ouyang Jing Liu Feifei Wu hang gao Xi Xie Hui-jiuan Chen State Key Laboratory of Optoelectronic Materials and Technologies Guangdong Province Key Laboratory of Display Material and TechnologySchool of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument School of Biomedical EngineeringSun Yat-Sen UniversityShenzhen 518107China The First Affiliated Hospital of Sun Yat-Sen University Guangzhou 510080China Pazhou Lab Guangzhou 510335China Institute of Microelectronics of the Chinese Academy of Sciences Beijing 100029China

Modern medicine is increasingly interested in advanced sensors to detect and analyze biochemical *** sensors based on potentiometric methods are a promising platform for monitoring physiological ions in biological *** semi-implantable devices are mainly based on single-parameter *** semi-implantable electrodes for multiparameter sensing have more restrictions on the electrode size due to biocompatibility considerations,but reducing the electrode surface area could potentially limit electrode *** study developed a semi-implantable device system comprising a multiplexed microfilament electrode cluster(MMEC)and a printed circuit board for real-time monitoring of intra-tissue K^(+),Ca^(2+),and Na^(+)*** electrode surface area was less important for the potentiometric sensing mechanism,suggesting the feasibility of using a tiny fiber-like electrode for potentiometric *** MMEC device exhibited a broad linear response(K^(+):2–32 mmol/L;Ca^(2+):0.5–4 mmol/L;Na^(+):10–160 mmol/L),high sensitivity(about 20–45 mV/decade),temporal stability(>2weeks),and good selectivity(>80%)for the above *** vitro detection and in vivo subcutaneous and brain experiment results showed that the MMEC system exhibits good multi-ion monitoring performance in several complex *** work provides a platform for the continuous real-time monitoring of ion fluctuations in different situations and has implications for developing smart sensors to monitor human health.

关键词： Multiplexed microfilament electrode cluster Physiological ion sensing Subcutaneous and brain experiment Wearable platform for multi-ion detection Continuous real-time monitoring system

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On a Class of Domain Optimization Problems in Eliptic Boundary Value Problems

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Communications in Mathematical Research 1999年第2期 18-26页

作者： gao hang and Zhao Hongliang (Department of Mathematics, Northest Normal University, Changchun, 130024)

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｄｏｍａｉｎｏｐｔｉｍｉｚａｔｉｏｎｐｒｏｂｌｅｍｉｓａｋｉｎｄｏｆｓｈａｐｅｏｐｔｉｍｉｚａｔｉｏｎｐｒｏｂｌｅｍ．Ｓｐｅｃｉｆｉｃａｌ－ｌｙ，ｗｅｗａｎｔｔｏｆｉｎｄａｄｏｍａ... 详细信息

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｄｏｍａｉｎｏｐｔｉｍｉｚａｔｉｏｎｐｒｏｂｌｅｍｉｓａｋｉｎｄｏｆｓｈａｐｅｏｐｔｉｍｉｚａｔｉｏｎｐｒｏｂｌｅｍ．Ｓｐｅｃｉｆｉｃａｌ－ｌｙ，ｗｅｗａｎｔｔｏｆｉｎｄａｄｏｍａｉｎ（ｗｈｉｃｈｉｓｃａｌｅｄｏｐ...

关键词： Domain Optimization Elliptic Boundary value Problem

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Construction and expression of an optimized, novel human immunodeficiency virus type-1 lentiviral vector containing green fluorescent protein

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Neural Regeneration Research 2011年第7期6卷 542-545页

作者： Xia Li Xueling Ma Lijing Zhao hang gao Hongjuan Wang Li Du1 Juan Wang Nan Li Kangding Liu Department of Neurology First Bethune Hospital of Jilin University Changchun 130021 Jilin Province China Third Department of Neurology Handan central Hospital. Handan 05600-1 Hebei Province China Department of Neurology Fourth Hospital of Harbin Medical University Harbin 150001 Heilongjiang Province China Department of Pathology Jilin University Changchun 130021 Jilin Province China Neonatal Division of Pediatric Department First'Bethune Hospital of Jilin University Changchun 130021 Jilin Province China

The human immunodeficiency virus （HIV） lentiviral vector is an ideal vector for gene therapy. In the present study, the wild-type HIV-1 genome was segregated into four plasmids, and an optimized novel HIV-1 lentiviral vector containing green fluorescent protein and vesicular stomatitis virus G pseudo-capsule was constructed. The plasmids were pHR-CMV-EGFP, pCMVΔ8.9, pRSV-Rev, pCMV-VSV-G. The four plasmid system was co-transfected into 293T cells, and green fluorescent protein expression was observed. The present study obtained lentiviral particles by high-speed centrifugation, and the lentiviral particle titer was 4 × 108 TU/mL after centrifugation. Thus, an optimized novel HIV-1 lentiviral vector was successfully constructed.

关键词： gene expression gene therapy human immunodeficiency virus 1 green fluorescent protein lentivirus neural regeneration

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Study on the Innovative Rural Domestic Sewage Processing Technique

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Journal of Landscape Research 2013年第5期5卷 21-22页

作者： LOU Haiting gao hang City Planning and HVAC Laboratory School of Environmental Science and Engineering Chang' an University

On the basis of analyzing domestic sewage features in rural China and also previous experience in sewage processing, a high-efficiency and low-cost technique for the rural domestic sewage processing was proposed, that is, "new bio-trickling filter + ecological concrete tank". Such an innovative technique is fit for national conditions of China, and worth to be popularized in rural China. The study also provides a referential support for other researches.

关键词： Rural environment Domestic sewage Sewage processing

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Data-driven approaches for time series prediction of daily production in the Sulige tight gas field, China

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Artificial Intelligence in Geosciences 2021年第1期2卷 165-170页

作者： Qi Zhang Ziwei Chen Yuan Zeng hang gao Qiansheng Wei Tiaoyu Luo Zhiguo Wang The Third Gas Production Plant of PetroChina Changqing Oilfield Branch WushenqiInner Mongolia017000PR China School of Mathematics and Statistics Xi'an Jiaotong UniversityXi'anShaanxi710049PR China

The Sulige tight gas field is presently the largest gas field in *** to the ultralow permeability and strong heterogeneity of the reservoirs in Sulige,the number of production wells has exceeded 3,000,keeping the stable gas supply in the ***,the daily production prediction of gas wells is significant for monitoring production and for implementing and evaluating stimulation ***,on the basis of the three datadriven time series approaches,the daily production of 1692 wells over 10 years was mining for the daily production prediction of wells in *** jointed deep long short-term memory and fully connected neural network(DLSTM-FNN)model was proposed by introducing the recurrent neural network's sequential expression ability and was compared with random forest(RF)and support vector regression(SVR).After the daily production predictions of thousands of wells in Sulige,the proposed DLSTM-FNN model significantly improved the time series prediction accuracy and efficiency in the short training samples and had strong availability and practicability in the Sulige tight gas field.

关键词： Prediction of production time series Long short-term memory neural network Random forest Support vector machine

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Damage mechanisms during lapping and mechanical polishing CdZnTe wafers

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Rare Metals 2010年第3期29卷 276-279页

作者： LI Yan,KANG Renke,gao hang,and WU Dongjiang Key Laboratory for Precision and Non-Traditional Machining Technology (Ministry of Education),Dalian University of Technology,Dalian 116024,China Key Laboratory for Precision and Non-Traditional Machining Technology (Ministry of Education) Dalian University of Technology Dalian China

CdZnTe wafers were machined by lapping and mechanical polishing processes,and their surface and subsurface damages were *** surface damages are mainly induced by three-body abrasive wear and embedded abrasive wear during lapping process.A new damage type,which is induced by the indentation of embedded abrasives,is found in the *** a floss pad is used to replace the lapping plate during machining,the surface damage is mainly induced by two-body abrasive and three-body abrasive wear,and the effect of embedded abrasives on the surface is greatly ***,this new damage type nearly disappears on the subsurface.

关键词： lapping mechanical polishing wafers surface subsurface abrasive

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Fabrication of flake-like NiCo_(2)O_(4)/reduced graphene oxide/melamine-derived carbon foam as an excellent microwave absorber

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 556-565页

作者： Konghu Tian hang Yang Chao Zhang Ruiwen Shu Qun Shao Xiaowei Liu Kaipeng gao The First Affiliated Hospital of Anhui University of Science and Technology(Huainan First People’s Hospital) Huainan 232001China Analysis and Test Center Anhui University of Science and TechnologyHuainan 232001China School of Materials Science and Engineering Anhui University of Science and TechnologyHuainan 232001China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

Carbon-based foams with a three-dimensional structure can serve as a lightweight template for the rational design and control-lable preparation of metal oxide/carbon-based composite microwave absorption *** this study,a flake-like nickel cobaltate/re-duced graphene oxide/melamine-derived carbon foam(FNC/RGO/MDCF)was successfully fabricated through a combination of solvo-thermal treatment and high-temperature *** indicated that RGO was evenly distributed in the MDCF skeleton,providing ef-fective support for the load growth of FNC on its *** S3,the FNC/RGO/MDCF composite prepared by solvothermal method for 16 h,exhibited a minimum reflection loss(RL_(min))of-66.44 dB at a thickness of 2.29 *** the thickness was reduced to 1.50 mm,the optimal effective absorption bandwidth was 3.84 *** of the absorption mechanism of FNC/RGO/MDCF revealed that its excellent absorption performance was primarily attributed to the combined effects of conduction loss,multiple reflection,scattering,in-terface polarization,and dipole polarization.

关键词： carbon foam reduced graphene oxide flake-like nickel cobaltate microwave absorbing materials

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