检索结果-南通市图书馆

Green Chemical Engineering 2024年第2期5卷 236-244页

作者： Chi Ma lihong zhao Zhengxin Mao Hao Su Qingfen Liu CAS Key Laboratory of Green Process and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China

Industrial pharmaceutical wastewater usually contains butyl acetate(BA)with a concentration of 1 wt%-7 wt%,and the traditional method for BA recovery is distillation with high energy consumption.Adsorption method is developed to recover BA with low concentration for the high efficiency and low energy consumption.Medium polar polyacrylate resins with macroporous structure of 233.1 nm and average particle size of about 526.5μm are successfully synthesized by suspension polymerization and used for the BA adsorption and desorption.The maximum adsorption capacity reaches 171.1 mg g^(-1)with relative standard deviation(RSD)value of 0.2%,which is more than twice the results in the literature.The BA desorption rate is 97.0%at 100℃with RSD value of 0.4%,and the resins are beneficial to the reuse in the adsorption-desorption cycle.The adsorption thermodynamics and kinetics are investigated,and the BA adsorption is a spontaneous and endothermic process with the increase of disorder degree.This process is mainly contributed by physical absorption and agree well with Freundlich model and pseudo-first-order adsorption kinetic model.The adsorption method avoids boiling a large amount of wastewater and hopefully provides a novel alternative technology for the BA recovery.

关键词： Butyl acetate recovery Resin adsorption Desorption Thermodynamics Kinetics

MEC Enabled Cooperative Sensing and Resource Allocation for Industrial IoT Systems

在线全文

学校读者我要写书评

暂无评论

China Communications 2022年第7期19卷 214-225页

作者： Yanpeng Dai lihong zhao Ling Lyu School of Information Science and Technology Dalian Maritime UniversityDalian 116086China State Key Laboratory of Integrated Services Networks Xidian UniversityShaanxi 710071China

In industrial Internet of Things systems,state estimation plays an important role in multisensor cooperative sensing.However,the state information received by remote control center experiences random delay,which inevitably affects the state estimation performance.Moreover,the computation and storage burden of remote control center is very huge,due to the large amount of state information from all sensors.To address this issue,we propose a layered network architecture and design the mobile edge computing(MEC)enabled cooperative sensing scheme.In particular,we first characterize the impact of random delay on the error of state estimation.Based on this,the cooperative sensing and resource allocation are optimized to minimize the state estimation error.The formulated constrained minimization problem is a mixed integer programming problem,which is effectively solved with problem decomposition based on the information content of delivered data packets.The improved marine predators algorithm(MPA)is designed to choose the best edge estimator for each sensor to pretreat the sensory information.Finally,the simulation results show the advantage and effectiveness of proposed scheme in terms of estimation accuracy.

关键词： industrial Internet of Things cooperative sensing MEC random delay

Zearalenone toxicosis on reproduction as estrogen receptor selective modulator and alleviation of zearalenone biodegradative agent in pregnant sows

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2022年第4期13卷 1222-1232页

作者： Jianchuan Zhou lihong zhao Shimeng Huang Qingxiu Liu Xiang Ao Yuanpei Lei Cheng Ji Qiugang Ma State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Sichuan tieqilishi Food Co. LtdMianyang 610000Sichuan provinceChina.

Background:Zearalenone(ZEA)is a resorcylic acid lactone derivative derived from various Fusarium species that are widely found in food and feeds.The molecular structure of ZEA resembles that of the mammalian hormone 17β-oestradiol,thus zearalenone and its metabolites are known to compete with endogenous hormones for estrogen receptors binding sites and to activate transcription of oestrogen-responsive genes.However,the effect of long-term low-dose ZEA exposure on the reproductive response to Bacillus subtilis ANSB01G culture for first-parity gilts has not yet been investigated.This study was conducted to investigate the toxic effects of ZEA as an estrogen receptor selective modulator and the alleviating effects of Bacillus subtilis ANSB01G cultures as ZEA biodegraders in pregnant sows during their first parity.Results:A total of 80 first-parity gilts(Yorkshire×Landrace)were randomly assigned to four dietary treatments during gestation:CO(positive control);MO(negative control,246μg ZEA/kg diet);COA(CO+B.subtilis ANSB01G culture with 2×10^(9)CFU/kg diet);MOA(MO+B.subtilis ANSB01G culture with 2×10^(9)CFU/kg diet).There were 20 replications per treatment with one gilt per replicate.Feeding low-dose ZEA naturally contaminated diets disordered most of reproductive hormones secretion and affected estrogen receptor-αand estrogen receptor-βconcentrations in serum and specific organs and led to moderate histopathological changes of gilts,but did not cause significant detrimental effects on reproductive performance.The addition of Bacillus subtilis ANSB01G culture to the diet can effectively relieve the competence of ZEA to estrogen receptor and the disturbance of reproductive hormones secretion,and then ameliorate toxicosis of ZEA in gilts.Conclusions:Collectively,our study investigated the effects of feeding low-dose ZEA on reproduction in pregnant sows during their first parity.Feeding low-dose ZEA could modulate estrogen receptor-αand-βconcentrations in specific organs,cause disturbance of reproductive hormones and vul

关键词： Bacillus subtilis ANSB01G Estrogen receptor Mycotoxin biodegradation Pregnant sows Reproductive performance ZEA

Dietary ellagic acid ameliorated Clostridium perfringens-induced subclinical necrotic enteritis in broilers via regulating inflammation and cecal microbiota

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2022年第5期13卷 1513-1530页

作者： Yu Tang Xinyue Zhang Yanan Wang Yongpeng Guo Peiqi Zhu Guiguan Li Jianyun Zhang Qiugang Ma lihong zhao State Key Laboratory of Animal Nutrition Poultry Nutrition and Feed Technology Innovation TeamCollege of Animal Science and TechnologyChina Agricultural UniversityNo.2.West Road Yuanming yuanBeijing 100193People’s Republic of China Jiangsu Lihua animal husbandry Co. Ltd.No.500Hexi VillageLuxi Village CommitteeNiutang TownWujin DistrictChangzhou CityJiangsu Province 213168People’s Republic of China COFCO feed Co. Ltd4th FloorNo.6Nandaan HutongXicheng DistrictBeijing 100193People’s Republic of China

Background: Subclinical necrotic enteritis(SNE), a common intestinal disease of broiler caused by Clostridium perfringens, could reduce production performance of broilers by chronic intestinal damage and poor absorption of nutrients. Ellagic acid(EA) has been reported to present antioxidant and anti-inflammatory properties on human and animals in many aspects. This study was conducted to evaluate the effect and mechanism of EA in relieving SNE in broilers induced by C. perfringens.Results: C. perfringens challenge decreased body weight(BW), average daily gain(ADG), jejunal villi height/crypt depth(V/C) ratio, the activity of catalase(CAT) and the mRNA expression of zonula occludens 1(ZO-1) in jejunal mucosa of broilers. While feed conversion ratios(FCR), jejunal crypt depth(CD), the activities of myeloperoxidase(MPO) and diamine oxidase(DAO), as well as the concentrations of interleukin 6(IL-6), C-reactive protein(CRP) and procalcitonin(PCT) in serum, the activities of inducible nitric oxide synthase(iNOS) and lysozyme(LZM), the concentration of malondialdehyde(MDA), and the mRNA expressions of claudin-2, TNF-α, IL-1β, TLR-4, TLR-2, NF-κB,JAK3, STAT6 and iNOS in jejunal mucosa of broilers were increased by C. perfringens challenge. Dietary EA supplement relieved these adverse effects, and heightened jejunal villi height(VH), the concentration of D-xylose in plasma, activity of superoxide dismutase(SOD), and the mRNA expression of occludin in jejunal mucosa of broilers.The alpha diversity of cecal microbiota indicated that dietary EA supplement increased observed species and Shannon index. C. perfringens challenge increased the relative abundance of Firmicutes and decreased the relative abundance of Desulfobacterota in cecal microbiota. EA increased the relative abundance of Firmicutes in cecal microbiota. LEfSe analysis showed that C. perfringens challenge triggered the imbalance of cecal microbiota in broilers, dietary EA supplementation led to a small beneficial effect on microbiota, while the simultaneous effe

关键词： Broiler Clostridium perfringens Ellagic acid Intestinal microbiota Subclinical necrotic enteritis

Effect of electrolyte anions on the cycle life of a polymer electrode in aqueous batteries

在线全文

学校读者我要写书评

暂无评论

eScience 2022年第1期2卷 110-115页

作者： Ye Zhang lihong zhao Yanliang Liang Xiaojun Wang Yan Yao Department of Electrical and Computer Engineering Materials Science and Engineering ProgramUniversity of HoustonHoustonTX77204USA Texas Center for Superconductivity at the University of Houston HoustonTX77204USA

Redox polymers are a class of high-capacity, low-cost electrode materials for electrochemical energy storage, butthe mechanisms governing their cycling stability are not well understood. Here we investigate the effect of anionson the longevity of a p-dopable polymer through comparing two aqueous zinc-based electrolytes. Galvanostaticcycling studies reveal the polymer has better capacity retention in the presence of triflate anions than that withsulfate anions. Based on electrode microstructural analysis and evolution profiles of the cell stacking pressure, theorigin of capacity decay is ascribed to mechanical fractures induced by volume change of the polymer activematerials during repeated cycling. The volume change of the polymer with the triflate anion is 61% less than thatwith the sulfate anion, resulting in fewer cracks in the electrodes. The difference is related to the different anionsolvation structures—the triflate anion has fewer solvated water molecules compared with the sulfate anion,leading to smaller volume expansion. This work highlights that anions with low solvation degree are preferablefor long-term cycling.

关键词： Aqueous batteries Polymer electrode Anions Volume chang

Review on biological degradation of mycotoxins

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Nutrition 2016年第3期2卷 127-133页

作者： Cheng Ji Yu Fan lihong zhao State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural University

The worldwide contamination of feeds and foods with mycotoxins is a significant problem. Mycotoxins pose huge health threat to animals and humans. As well, mycotoxins bring enormous economic losses in food industry and animal husbandry annually. Thus, strategies to eliminate or inactivate mycotoxins in food and feed are urgently needed. Traditional physical and chemical methods have some limitations such as limited efficacy, safety issues, losses in the nutritional value and the palatability of feeds, as well as the expensive equipment required to implement these techniques. Biological degradation of mycotoxins has shown promise because it works under mild, environmentally friendly conditions. Aflatoxin(AF), zearalenone(ZEA) and deoxynivalenol(DON) are considered the most economically important mycotoxins in terms of their high prevalence and significant negative effects on animal performance.Therefore, this review will comprehensively describe the biological degradation of AF, ZEA and DON by microorganisms(including fungi and bacteria) and specific enzymes isolated from microbial systems that can convert mycotoxins with varied efficiency to non-or less toxic products. Finally, some strategies and advices on existing difficulties of biodegradation research are also briefly proposed in this paper.

关键词： Biological degradation Mycotoxins Aflatoxins Zearalenone Deoxynivalenol

Vitamin K alleviates bone calcium loss caused by Salmonella Enteritidis through carboxylation of osteocalcin

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2021年第4期12卷 1572-1581页

作者： Yaojun Liu Rainer Mosenthin lihong zhao Jianyun Zhang Cheng Ji Qiugang Ma State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Institute of Animal Science University of Hohenheim70593 StuttgartGermany

Background:The present study aimed at evaluating the effect of vitamin K(VK)supplementation on bone health of laying hens challenged by Salmonella Enteritidis.Methods:A total of 8032-week-old double negative salmonella-free brown-egg laying hens were randomly assigned to 4 treatments with 20 replicates each(1 bird per replicate)according to a 2×2 factorial design with 2 dietary VK supplementation levels[0 mg/kg(VK0)vs 2 mg/kg VK(VK2)and 2 challenge treatments[Salmonella Enteritidis(SE)vs physiological saline solution(PS)].During the last 3 days of week 43 of age,birds of both VK treatments were either orally challenged with 1.0 mL suspension of 109 cfu/mL S.Enteritidis daily or received the same volume of PS.Results:The laying rate,daily egg mass,tibia strength,CT,cOC and cOC/(cOC+ucOC)of VK2 treatment increased(P<0.05)in contrast to VK0,however,the medullary area and ucOC of VK2 treatment decreased(P<0.05)in contrast to VK0.Mortality,medullary area,serum Ca content of SE treatments increased(P<0.05)in contrast to PS treatments.In both SE treatments,the decrease(P<0.05)in birds’tibia strength was associated with higher(P<0.05)Ca levels in serum.There is an interaction(P<0.05)between SE challenge and VK levels with regard to tibia strength and serum Ca levels.At week 42,serum CT was positively correlated with cOC(R=0.99,P=0.009);at week 44,tibia strength was positively correlated with BMD(R=0.95,P=0.045),but negatively correlated with medullary area(R=−0.98,P=0.018).Conclusions:VK(2 mg/kg)supplementation to diets of laying hens can enhance bone strength under challenge situations with Salmonella Enteritidis.Medullary area has proven to be a sensitive biomarker for bone calcium loss caused by SE infection.

关键词： Calcium Laying hen Salmonella Enteritidis Vitamin K

Enriched endoplasmic reticulum-mitochondria interactions result in mitochondrial dysfunction and apoptosis in oocytes from obese mice

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2018年第1期9卷 91-98页

作者： lihong zhao Tengfei Lu Lei Gao Xiangwei Fu Shien Zhu Yunpeng Hou State Key Laboratory of Agrobiotechnolocjy College of Biolocjical Sciences China Agricultural University Yuanmincjyuan west Rd 2 Bejing100193 China Key Laboratory of Animal Genetics Breeding and Reproduction College of Animal Science and Technology China Agricultural University Beijing China

Background： Maternal obesity alters oocytes and subsequent fetal metabolism. An increasing number of studies have shown that the endoplasmic reticulums（ER） or mitochondria have important effects on oocyte quality, but there has been no study of the effect of mitochondria-associated ER membranes（MAMs） on oocyte quality. The present study was designed to assess whether the level of MAM and MAM-related proteins were different in oocytes from obese and control mice.Results： First, oocytes from mice with high-fat-diet（HFD）-induced obesity had higher levels（either greater numbers or a higher proportion for the same numbers） of MAM than oocytes from control mice. The abundance of MAM-related proteins in oocytes from obese mice was significantly greater at both the messenger RNA and protein levels, including inositol 1,4,5-trisphosphate receptor, type 1（IP3R1）, inositol 1,4,5-trisphosphate receptor,type 2（IP3 R2） and phosphofurin acidic cluster sorting protein 2（PACS-2）. Further, there was an increase in mitochondrial Ca^（2＋）（[Ca^（2＋）]_m） which was associated with increased apoptosis and compromised cytoplasmic maturation in oocytes from obese mice. Down-regulation of MAM-related protein IP3R1 in oocytes from obese mice decreased [Ca^2＋]_mand apoptosis and improved cytoplasmic maturation but did not reduce the overal MAM level. However, down-regulating MAM-related protein PACS-2 in oocytes from obese mice did reduce the level of MAM and [Ca^（2＋）]_m, which decreased the rate of apoptosis and improved cytoplasmic maturation of oocytes from obese mice.Conclusions： It is possible that enriched MAM could increase [Ca^（2＋）]_m, and this increase has been found to be associated with increased apoptosis and compromised cytoplasmic maturation in oocytes from obese mice. This finding suggests a novel therapeutic target for obesity-induced oocyte defects.

关键词： Apoptosis IP3R1 MAM Mitochondrial Ca2＋ Obesity Oocyte PACS-2

在线全文

学校读者我要写书评

暂无评论

高弹舒适型黏锦氨瑜伽运动面料的开发

针织工业 2024年第5期 7-10页

作者：赵丽红李辉江苏鼎新印染有限公司江苏苏州215514

通过对艾草竹黏纤维、莫代尔、Coolmax涤纶、异型截面抗菌锦纶4种功能纤维,PTT、氨纶2种弹力纤维进行优化组合,以及双芯弹性包芯纱纺纱技术、织物组织结构设计与织造技术、环保染色和后整理技术,开发一款高弹舒适型黏锦氨瑜伽运动面料... 详细信息

通过对艾草竹黏纤维、莫代尔、Coolmax涤纶、异型截面抗菌锦纶4种功能纤维,PTT、氨纶2种弹力纤维进行优化组合,以及双芯弹性包芯纱纺纱技术、织物组织结构设计与织造技术、环保染色和后整理技术,开发一款高弹舒适型黏锦氨瑜伽运动面料。并对该面料的抗菌性能、吸湿速干性及弹性性能进行测试。结果表明,该面料手感柔软、弹力佳、抗菌性能和吸湿排汗性能优异,可以用于开发瑜伽、户外运动休闲场景的服装,具有良好的市场前景。

关键词：高弹吸湿速干抗菌双芯弹力多组分

术前超声引导下星状神经节阻滞对胸腔镜手术患者的肺保护作用及机制

在线全文

学校读者我要写书评

暂无评论

新乡医学院学报 2024年第2期41卷 151-157,162页

作者：赵月韩丽赵李红杨芬谢阳南京医科大学附属苏州医院/苏州市立医院麻醉科江苏苏州215002

目的探讨术前超声引导下星状神经节阻滞(SGB)对胸腔镜手术单肺通气(OLV)患者的肺保护作用及机制。方法选择2021年1月至2022年4月于南京医科大学附属苏州医院行胸腔镜下OLV肺叶切除术的84例患者为研究对象,按照随机数字表法将患者分为观... 详细信息

目的探讨术前超声引导下星状神经节阻滞(SGB)对胸腔镜手术单肺通气(OLV)患者的肺保护作用及机制。方法选择2021年1月至2022年4月于南京医科大学附属苏州医院行胸腔镜下OLV肺叶切除术的84例患者为研究对象,按照随机数字表法将患者分为观察组和对照组,每组42例。观察组患者麻醉诱导前实施超声引导下SGB;对照组患者不做穿刺操作。2组患者采用相同的麻醉诱导和维持方案。记录患者入手术室后(T_(0))、OLV开始前(T_(1))、OLV开始后30 min(T_(2))、OLV开始后60 min(T_(3))、术毕(T_(4))、拔管后30 min(T_(5))时血流动力学、呼吸力学参数和动脉血气指标。比较各时间点2组患者氧合指数(OI)和肺内分流率(Qs/Qt)以及pH值。分别于T_(0)、T_(3)、T_(5)时,抽取2组患者静脉血,应用酶联免疫吸附法检测血清中肺表面活性物质相关蛋白-A(SP-A)、超氧化物歧化酶(SOD)、丙二醛(MDA)、白细胞介素(IL)-6及IL-10水平,记录患者术后SGB相关并发症及术后72 h内肺部并发症发生情况。结果2组患者T_(1)、T_(2)、T_(3)时的平均动脉压(MAP)和心率(HR)显著低于T_(0)时(P0.05),2组患者其他时间点间的MAP和HR比较差异无统计学意义(P>0.05)。T_(1)、T_(2)、T_(3)时,观察组患者的MAP显著低于对照组(P0.05)。T_(0)~T_(5)各时间点2组患者的脉搏氧饱和度(SpO_(2))比较差异无统计学意义(P>0.05)。2组患者T_(2)、T_(3)时的气道峰压(Ppeak)、呼吸频率(RR)显著高于T_(1)和T_(4)时,潮气量(TV)显著低于T_(1)和T_(4)时(P0.05);T_(1)~T_(4)时,2组患者的RR、呼气末二氧化碳分压(PetCO_(2))比较差异无统计学意义(P>0.05)。T_(0)~T_(5)时,2组患者的pH比较差异无统计学意义(P>0.05)。2组患者T_(1)与T_(0)时的OI比较差异无统计学意义(P>0.05);2组患者T_(2)~T_(5)的OI显著低于T_(0)和T_(1)时(P0.05);T_(3)、T_(5)时,观察组患者血清MDA水平显著低于对照组(P<0.05)。T_(3)、T_(5)时,对照组患者血清SOD水平显著低于T_(0)时,观察组患者血清SOD水平显著高于T_(0)时(P<0.05);T_(3)、T_(5)时,观察组患者血清SOD水平显著高于对照组(P<0.05)。观察组患者中4例出现单侧喉返神经阻滞症状,1例患者出现臂丛神经阻滞,均于术后24 h内好转,术后随访未见其他不良反应。术后72 h内对照组有1例患者出现低氧血症。结论术前超声引导下SGB可以显著改善胸腔镜手术OLV患者的OI,减少肺内分流,抑制炎症反应和氧化应激,从而发挥肺保护作用。

关键词：星状神经节阻滞胸腔镜手术单肺通气肺保护炎症反应氧化应激