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science China Chemistry 2024年第11期67卷 3657-3661页

作者： lu-lu Ma Jiaqi Liu Kang Zhou Zixuan Cao Jiafeng Miao Guo-Ping Yang Yao-Yu Wang Jing Li Hao Wang Key Laboratory of synthetic and Natural Functional Molecule Chemistry of the Ministry of Education Shaanxi Key Laboratory of PhysicoInorganic Chemistry College of Chemistry & Materials Science Northwest University Hoffmann Institute of Advanced Materials Shenzhen Polytechnic University shenzhen senior High school Department of Chemistry and Chemical Biology Rutgers University

selective adsorption of paraffins over olefins（mostly C2 and C3） by porous solids could offer tremendous advantages for the purification of olefins, which is, however, challenging as it has stringent requirements on the pore dimensions and pore surface chemistry of the adsorbent. We report here a metal-organic framework（MOF） with novel topology, Y3（μ3-OH）(TCMPB)2(denoted as HIAM-316, TCMPB4-= 1,2,4,5-tetra（4-carboxy-3-methylphenyl）benzene), which shows reversed separation of C2H6/C2H4and C3H8/C3H6simultaneously. The ideal adsorbed solution theory（IAsT） selectivities for equimolar binary mixtures of C2H6/C2H4and C3H8/C3H6were calculated to be 1.67 and 1.23 at 1 bar and 298 K for HIAM-316. Its capability of removing paraffines from paraffin/olefin mixtures is validated by breakthrough measurements. Molecular simulations reveal that the preferential adsorption of paraffins over olefins by HIAM-316 may be attributed to the abundant carboxylate oxygen atoms along its channel.

关键词： metal-organic framework adsorption separation

study on the thermo-hydraulic behaviors of the new-pattern fuel assembly in lead-based fast reactors based on OpenFOAM

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NUCLEAR sCIENCE AND TECHNIQUEs 2024年第10期35卷 1-14页

作者： Li, Yun-Xiang Yang, Run-sheng Li, Yue su, Xing-Kang Huang, Zi-Nan Meng, lu Li, song Xi, Bin Zhang, You-Peng Zhang, lu Jiang, Wei Fudan Univ Inst Modern Phys Shanghai 200433 Peoples R China Lanzhou Univ Sch Nucl Sci & Technol Lanzhou 730000 Peoples R China Chinese Acad sci Inst Modern Phys Lanzhou 730000 Peoples R China

To improve the heat transfer efficiency of the coolant in lead-based fast reactors, this study optimized the configuration and rotational direction of the spacer wires in fuel assemblies to design a new-pattern fuel assembly. This study conducted detailed comparisons between traditional and new pattern fuel assembly rod bundles utilizing the open-source computational fluid dynamics platform, OpenFOAM. The results indicated that the new design may significantly reduce the pressure drop along the rod bundle, which is beneficial for lowering the pressure drop. Furthermore, this new design improved coolant mixing in the subchannels, which facilitated a more uniform temperature distribution and lower thermal gradients at the assembly outlet. These factors collectively reduced the thermal fatigue and creep in nearby internal components. Overall, the new-pattern fuel assembly proposed in this study may have better heat transfer performance, thereby enhancing the Integrated Thermal-Hydraulic Factor by 48.2% compared to the traditional pattern.

关键词： spacer wires Enhanced coolant mixing OpenFOAM CFD simulations 3-DIMENsIONAL FLOW

Effects of dietary Clostridium butyricum and rumen protected fat on meat quality,oxidative stability,and chemical composition of finishing goats

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Journal of Animal science and Biotechnology 2024年第2期15卷 911-924页

作者： Meimei Zhang Zhiyue Zhang Xinlong Zhang Changming lu Wenzhu Yang Xiaolai Xie Hangshu Xin Xiaotan lu Mingbo Ni Xinyue Yang Xiaoyang Lv Peixin Jiao College of Animal science and Technology Northeast Agricultural UniversityHarbin 150030People’s Republic of China Lethbridge Research and Development Centre Lethbridge T1J 4B1Canada school of Agriculture and Food sciences The University of QueenslandGattonQLD 4343Australia International Joint Research Laboratory in Universities of Jiangsu Province of China for Domestic Animal Germplasm Resources and Genetic Improvement Yangzhou 225009China

Background Clostridium butyricum(CB)is a probiotic that can regulate intestinal microbial composition and improve meat *** protected fat(RPF)has been shown to increase the dietary energy density and provide essential fatty ***,it is still unknown whether dietary supplementation with CB and RPF exerts beneficial effects on growth performance and nutritional value of goat *** study aimed to investigate the effects of dietary CB and RPF supplementation on growth performance,meat quality,oxidative stability,and meat nutritional value of finishing ***-two goats(initial body weight,20.5±0.82 kg)were used in a completely randomized block design with a 2 RPF supplementation(0 vs.30 g/d)×2 CB supplementation(0 vs.1.0 g/d)factorial treatment *** experiment included a 14-d adaptation and 70-d data and sample collection *** goats were fed a diet consisted of 400 g/kg peanut seedling and 600 g/kg corn-based concentrate(dry matter basis).Result Interaction between CB and RPF was rarely observed on the variables measured,except that shear force was reduced(Psed intramuscular fat(IMF)content with adding RPF was more pronounced(Plues(P=0.007),total antioxidant capacity(P=0.050),glutathione peroxidase activities(P=0.006),concentrations of 18:3(Psaturated fatty acids(P=0.048)were increased,whereas the L*values(Pshear force(P=0.050)and malondialdehyde content(P=0.044)were decreased by adding ***,CB supplementation increased essential amino acid(P=0.027),flavor amino acid(P=0.010)and total amino acid contents(P=0.024)as well as upregulated the expression of lipoprotein lipase(P=0.034)and peroxisome proliferator-activated receptorγ(PPARγ)(P=0.012),and downregulated the expression of stearoyl-CoA desaturase(sCD)(P=0.034).The RPF supplementation increased dry

关键词： Chemical composition Clostridium butyricum Goats Meat quality Oxidative stability Rumen protected fat

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2-O-β-D-Glucopyranosyl-L-ascorbic acid,an ascorbic acid derivative isolated from the fruits of Lycium barbarum L.,ameliorates high fructose-induced neuroinflammation in mice:involvement of gut microbiota and leaky gut

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Food science and Human Wellness 2024年第1期13卷 241-253页

作者： Wei Dong Yujia Peng Guijie Chen Zhiyong Xie Weiqi Xu Wangting Zhou Jia Mi lu lu Yi sun Xiaoxiong Zeng Youlong Cao Yamei Yan College of Food science and Technology Nanjing Agricultural UniversityNanjing 210095China Institute of Wolfberry Engineering Technology National Wolfberry Engineering Research CenterNingxia Academy of Agriculture and Forestry SciencesYinchuan 750002China

Western diet(rich in highly refined sugar and fat)can induce a range of metabolic dysfunctions in animals and humans,including neuroinflammation and cognitive function *** and cognitive impairment,two critical pathological characteristics of Alzheimer’s disease,have been closely associated with microbial alteration via the gut-brain ***,the present study aimed to investigate the influence of 2-O-β-D-glucopyranosyl-L-ascorbic acid(AA-2βG)isolated from the fruits of Lycium barbarum on preventing the high-fructose diet(HFrD)induced neuroinflammation in *** was found that AA-2βG prevented HFr D-induced cognitive ***-2βG also predominantly enhanced the gut barrier integrity,decreased lipopolysaccharide entry into the circulation,which subsequently countered the activation of glial cells and neuroinflammatory *** beneficial effects were transmissible by horizontal fecal microbiome transplantation,transferring from AA-2βG fed mice to HFr D fed ***,AA-2βG exerted neuroprotective effects involving the enrichment of Lactobacillus and Akkermansia,potentially beneficial intestinal *** present study provided the evidence that AA-2βG could improve indices of cognition and neuroinflammmation via modulating gut dybiosis and preventing leaky *** a potential functional food ingredient,AA-2βG may be applied to attenuate neuroinflammation associated with Western-style diets.

关键词： Neuroinfl ammation Gut microbiota Leaky gut Lipopolysaccharide Fecal microbiome transplantation 2-O-β-D-Glucopyranosyl-L-ascorbic acid

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Learning Improves Peripheral Vision Via Enhanced Cortico-Cortical Communications

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Neuroscience Bulletin 2024年第7期40卷 1007-1011页

作者： Yuwei Cui Xincheng lu MiYoung Kwon Nihong Chen Department of Psychological and Cognitive sciences Tsinghua UniversityBeijing 100084China IDG/McGovern Institute for Brain Research at Tsinghua University Beijing 100084China Department of Psychology Northeastern UniversityBostonMA 02115USA

Dear Editor,The adult human visual system is capable of reshaping its oculomotor control and sensory coding to adapt to impoverished visual *** one's central vision is deprived,a spared part of the peripheral retina acts as a pseudo fovea termed as preferred retinal locus(PRL).In people with normal vision,a PRL can be induced via oculomotor training with simulated central vision loss[1,2].

关键词： visual shaping capable

Current practice in autologous rib and costal-cartilage harvest for rhinoplasty:A systematic review

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Chinese Journal of Plastic and Reconstructive surgery 2024年第1期6卷 41-48页

作者： Mengyuan Jiang Haizhong Huo lu Zhang Department of Plastic and Reconstructive surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China Department of General surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China

Background:Autologous costal grafts are used universally in clinical practice for rhinoplasty and ***,surgeons worldwide have not agreed on the details of graft harvesting,including rib selection,side preference,operation mode,cutting methods,and handling of the periosteum and *** study aimed to provide an overview of the novel techniques used for auto-rib harvesting in rhinoplasty within the past 5 years and identify potential avenues for future ***:We searched for related articles in PubMed,Embase,and Web of science from 2019 to 2023,summa-rized crucial but controversial steps in recent practice,and analyzed their theoretical basis and clinical ***:Auto-rib and cartilage open harvest is still mainstream in rhinoplasty and reconstruction,with the 5th to 8th ribs and cartilage being the most *** laparoscopic harvest is gaining attention,being second only to the open harvest,with the 9th/10th ribs and cartilages being particularly *** clinical applications of full-cut and split-cut methods differ in their *** for some special reasons,almost all studies tended to preserve the periosteum and perichondrium in situ,and few surgeons chose to harvest the grafts on the left ***:Multiple techniques have emerged,requiring surgeons to balance the benefits and risks of various strategies at each *** theories and techniques should be fully tested promptly and in clinical practice before wide ***,a professional consensus is needed for better directivity,precision,and stability in clinical practice.

关键词： Rhinoplasty Autologous graft Cartilage Rib Periosteum Perichondrium

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Lightweight and high-security laser-based cotton tip pruning robot

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International Journal of Agricultural and Biological Engineering 2024年第4期17卷 98-108页

作者： Xuan'ang Guo Ziyang Mao Zedong shi Wei lu school of Artificial Intelligence Nanjing Agricultural UniversityNanjing 210031China

Considering the current environmental pollution caused by chemical topping,plant damage caused by mechanical topping,and the high cost of manual topping,a laser-based cotton-tip pruning robot for field cotton was designed in this *** main advantages of this robot include its safety,light weight,low cost,and environmental ***,the structural design,measurement,and corresponding control system design of the robot were ***,a precise laser control method based on Yolov5 cotton top identification and the inverse kinematic solution of parallel robot rapid positioning were ***,the optimal laser irradiation wavelength and duration were ***,a laser-topping experiment was conducted,and the overall accuracy and recall rates for cotton identification were 98.3%and 99.3%,*** AP and mAP at the threshold value of 0.5 reached 99.3%and 78.8%,*** maximum positioning error of the jacking system is 2.6 mm,and the repeated positioning error is within±1.2 cm,which meets the accuracy requirements of laser ***-purple laser irradiation at 15 W and 405 nm for 22 s was the best topping *** the effects of cotton topping with and without manual topping,it can be seen that laser topping significantly improved the yield and *** with the photothermal response of the cotton topping,the feasibility of laser topping was verified both theoretically and *** laser-topping scheme proposed in this study exhibits high efficiency,environmental protection,and safety,as well as good application prospects.

关键词： laser topping parallel manipulator photothermal response object detection

Optimized parameters of downhole all-metal PDM based on genetic algorithm

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Petroleum science 2024年第4期21卷 2663-2676页

作者： Jia-Xing lu Ling-Rong Kong Yu Wang Chao Feng Yu-Lin Gao China University of Geosciences (Beijing) Key Laboratory on Deep Geo-Drilling Technology of Ministry of Natural Resources

Currently, deep drilling operates under extreme conditions of high temperature and high pressure,demanding more from subterranean power motors. The all-metal positive displacement motor, known for its robust performance, is a critical choice for such drilling. The dimensions of the PDM are crucial for its performance output. To enhance this, optimization of the motor's profile using a genetic algorithm has been undertaken. The design process begins with the computation of the initial stator and rotor curves based on the equations for a screw cycloid. These curves are then refined using the least squares method for a precise fit. Following this, the PDM's mathematical model is optimized, and motor friction is assessed. The genetic algorithm process involves encoding variations and managing crossovers to optimize objective functions, including the isometric radius coefficient, eccentricity distance parameter,overflow area, and maximum slip speed. This optimization yields the ideal profile parameters that enhance the motor's output. Comparative analyses of the initial and optimized output characteristics were conducted, focusing on the effects of the isometric radius coefficient and overflow area on the motor's performance. Results indicate that the optimized motor's overflow area increased by 6.9%, while its rotational speed reduced by 6.58%. The torque, as tested by Infocus, saw substantial improvements of38.8%. This optimization provides a theoretical foundation for improving the output characteristics of allmetal PDMs and supports the ongoing development and research of PDM technology.

关键词： Positive displacement motor Genetic algorithm Profile optimization Matlab programming Overflow area

The Impact of New Regulations on Prevention and Control of E-Cigarettes on Adolescents in Middle schools—A City in China,2022–2023

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China CDC weekly 2024年第14期6卷 289-293页

作者： Meng Lyu Wenlong lu Lanhua Zou Jingfan Xiong Jie Yang Tobacco Control Office Chinese Center for Disease Control and PreventionBeijingChina shenzhen Center for Chronic Disease Control Shenzhen CityGuangdong ProvinceChina

What is already known about this topic?To protect the health of young people from the harmful impacts of electronic cigarettes(e-cigarettes),China has enacted various policies and regulations since *** of October 1,2022,the Electronic Cigarette Management Measures were put into *** prohibited the sale of flavored e-cigarettes,permitting only those of plain tobacco flavor to be *** is added by this report?The illegal market for flavored e-cigarettes,often disguised as milk tea cups,cola cans,and violent bear images,continues to *** is an increased need to bolster support for the prohibition of flavored e-cigarettes and enhance public awareness of associated *** are the implications for public health practice?To advance the health of China’s youth,it is crucial to improve the implementation and understanding of ecigarette policies and guidelines.

关键词： Middle Impact plain

Perianal disease in inflammatory bowel disease:Broadening treatment and surveillance strategies for anal cancer

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World Journal of Gastroenterology 2024年第28期30卷 3373-3385页

作者： Tatiana Pacheco sara Monteiro luísa Barros Jorge silva Department of Gastroenterology Centro Hospitalar do Tamega e SousaPenafiel 4560-136Portugal

The perianal disease affects up to one-third of individuals with Crohn's disease(CD),causing disabling symptoms and significant impairment in quality of life,particularly for those with perianal fistulising CD(PFCD).The collaborative effort between gastroenterologists and surgeons is essential for addressing PFCD to achieve fistula closure and promote luminal *** fistula healing rates with conventional therapies have prompted the emergence of new biological agents,endoscopic procedures and surgical techniques that show promising *** these,mesenchymal stem cells injection is a particularly hopeful *** addition to the burden of fistulas,individuals with perianal CD may face an increased risk of developing anal *** underscores the importance of surveillance programmes and timely interventions to prevent late diagnoses and poor ***,there is no established formal anal screening *** this review,we provide an overview of the current state of the art in managing PFCD,including novel medical,endoscopic and surgical *** discussion also focuses on the relevance of establishing an anal cancer screening programme in CD,intending to propose a risk-based surveillance *** validation of this surveillance programme would be a significant step forward in improving patient care and outcomes.

关键词： Inflammatory bowel disease Crohn's disease Perianal Fistula Anus diseases Management Anal cancer screening