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电能表用外置断路器检测流水线设计

工业技术创新 2021年第2期8卷 7-14页

作者：黄友朋纪伊琳路韬广东电网有限责任公司计量中心广东清远511545

智能电网的迭代升级对电能表用外置断路器检测精准性和效率提出了更高要求,检测流水线的研发成为迫切需要。从结构设计和控制系统设计两方面,提出一套电能表用外置断路器检测流水线的设计方案。结构设计上,检测流水线由输送系统、全检... 详细信息

智能电网的迭代升级对电能表用外置断路器检测精准性和效率提出了更高要求,检测流水线的研发成为迫切需要。从结构设计和控制系统设计两方面,提出一套电能表用外置断路器检测流水线的设计方案。结构设计上,检测流水线由输送系统、全检单元、抽检单元组成,以精益生产为理念进行布局,实现输送、检测的精简高效;全检单元与抽检单元分开部署,进行分段设计,降低系统复杂性、耦合性;对部分测试模块进行创新设计,实现对多种规格断路器产品的兼容。控制系统设计上,检测流水线由主控系统和单元控制系统组成,主控系统架构分为管理层、执行层和设备层,满足系统可靠性、可维护性等指标;单元控制系统由可编程逻辑控制器(PLC)、内置网络端口等组成,实现高速实时控制和数据处理机制管理。应用实施后,流水线检测能力提升至35万只/年,误检率低至0.5%,为广东电网推广更精准的远程费用采集和监控提供了技术保障。

关键词：电能表断路器检测流水线精益生产可编程逻辑控制器远程费用控制

ThMn12-Type Alloys for Permanent Magnets

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Engineering 2020年第2期6卷 141-147页

作者： G.C.Hadjipanayis A.M.Gabay A.M.Schonhobel A.Martin-Cid J.M.Barandiaran D.niarchos Department of Physics and Astronomy University of DelawareNewarkDE 19716USA BCMaterials Leioa 48940Spain nCSR Demokritos Agia Paraskevi 15341Greece

Iron-rich compounds with the tetragonal ThMn12-type structure have the potential to meet current demands for rare-earth-lean permanent magnets with high energy density and operating temperatures of 150-200℃.However,while it is normal for magnet technology to lag behind the development of underlying magnetic material,this gap has always been unusually large for ThMn12-type *** gap has widened further in recent years,as excellent combinations of intrinsic magnetic properties have been obtained in compounds synthesized with a smaller amount of structure-stabilizing elements(e.g.,SmFe11V or Sm0.8Zr0.2Fe9.2Co2.3Ti0.5)or with no such elements(i.e.,SmFe9.6Co2.4 thin films).The search for promising compounds continues-with increasing help coming from theoretical ***,progress in the development of magnets beyond polymer-bonded interstitially modified powders remains *** introduction of lanthanum(La)was found to stabilize low-meltingtemperature minority phases in Sm(Fe,Ti)12 alloys,thus allowing for liquid-phase sintering for the first *** high reactivity of La,however,has apparently undermined the development of coercivity(Hc).A controlled crystallization of the initially suppressed ThMn12-type phase makes"bulk"magnetic hardening possible,not only in Sm-Fe-V alloys(in which it has been known since the 1990s),but also is in La-added(Ce,Sm)(Fe,Ti)12 *** properties of the bulk-hardened alloys,however,remain *** synthesized(Sm,Zr)(Fe,Si)12 and(Sm,Zr)(Fe,Co,Ti)12 powders may become suitable for sintering into powerful fully dense magnets,although not before a higher degree of anisotropy in both alloys and a higher Hc in the latter alloy have been developed.

关键词： Permanent magnets Rare earths permanent magnets ThMn12 structure

北京市怀柔区儿童维生素D营养状况及其与体成分的关系

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中华流行病学杂志 2010年第1期31卷 34-38页

作者：赵静张倩张环美郭宏霞 Rickard Oste 郝利楠 Gunilla Onning Lella Hulthen 胡小琪中国疾病预防控制中心营养与食品安全所北京100050 瑞典隆德大学化学与化学工程系四川大学华西公共卫生学院瑞典隆德大学食品化学与应用营养系瑞典哥德堡大学健康科学研究院临床营养系

目的分析儿童维生素D的营养状况及其与体成分的关系。方法选取北京市怀柔区（北纬40．3°）7～11岁学龄儿童381名，于2008年3月采集静脉血并采用酶联免疫吸附试验（ELISA，英国IDS公司）测定血清中25-羟维生素D[25（0H）D]的浓度，双能... 详细信息

目的分析儿童维生素D的营养状况及其与体成分的关系。方法选取北京市怀柔区（北纬40．3°）7～11岁学龄儿童381名，于2008年3月采集静脉血并采用酶联免疫吸附试验（ELISA，英国IDS公司）测定血清中25-羟维生素D[25（0H）D]的浓度，双能X线吸收仪（DExA，美国norland公司）测定前臂及全身的体成分，分析维生素D与体成分的相关性。结果研究对象血清25（OH）D的平均浓度为（44．4±12．5）nmol／L，维生素D缺乏和不足率[血清25（OH）D≤50nmol／L]达68．5％。男生血清25（OH）D浓度（46．3±13．3）nmol／L高于女生（42．0±11．1）nmol／L，差异有统计学意义（t=3．38，P〈0．01）。血清25（OH）D浓度与前臂近端、远端、全身及分部位中四肢的瘦体重呈正相关（r=0．13～0．19，P〈0．05），与前臂近端、远端的体脂百分比呈负相关（r=-0．14，P〈0．05；r=-0．1]，P〈0．05），均有统计学意义。调整年龄、性别、身高、体重等混杂因素后，与前臂近端、全身分部位中双下肢的瘦体重相关性仍有统计学意义（r=0．12～0．14，P〈0．05）。血清25（OH）D浓度与各部位体脂的相关性均无统计学意义。结论维生素D缺乏在北京市郊区儿童中较为普遍，而维生素D营养状况对体成分，尤其对瘦体重有促进作用。

关键词：维生素D缺乏儿童体成分 25-羟维生素D

PRELIMInARY STUDY On THE ASSOCIATIOn OF HORMOnE SEnSITIVE LIPASE GEnE POLYMORPHISM WITH PIG PERFORMAnCE

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PRELIMINARY STUDY ON THE ASSOCIATION OF HORMONE SENSITIVE LI...

面向21世纪的动物科学与动物医学国际研讨会

作者： WUZhen-Fang XIOnG Yuan-Zhu I.Harbitz Deng Chang-Yan JIAnG Si-Wen( College of Animal science, Huazhong Agricultural University, Wuhan, 430070, China College of Animal science, South of China Agricultural University, Guangzhou, 510640, China norwegian School of Veterinary Science., P.O. Box 8146Dep. n-0033 Olso, norway)

＜正＞Hormone sensitive iipase （HSL） is a key enzyme in fat metabolism. The polymorphism of the pig HSL gene is studied in this paper. The SSCP （Single Strand Conformational polymorphism） is found in the HSL gene Exon 8. It showed three genotypes （MM. Mn. nn）, fat-type pig breeds the Meishan and Tongcheng pigs have more allele M, with frequencies of 0.690M and 0.740M, respectively;however, lean-type pig breeds Landrace and the Large white pigs have more allele n, with frequencies of 0.847 n and 0.845 n, respectively. PCR fragments representing HSL genotypes MM and nn are sequenced. Two A→G transitions were detected, and it resulted in corresponding changes of amino acid （Asn→Asp and Glu→Gly） in the HSL protein, respectively. Also significant association were found between SSCP of the porcine HSL gene and backfat depth in Meishan × the large white pig population. We think the HSL gene may be considered as a candidate gene for fatness in pigs.

关键词： hormone sensitive lipase pig SSCP

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大学生超重与偏瘦群体肠道菌群分布特点分析

青岛医药卫生 2014年第4期46卷 258-260页

作者：张烨高蕾牛礼东王兴兰丁守怡青岛大学医学院山东青岛266071

目的探讨超重与偏瘦大学生群体肠道菌群分布是否存在差别,探索两个群体肠道菌群微生态分布特点。方法以BMI≥24(超重)及BMI≤18.5(偏瘦)的青岛大学学生为研究对象,用无菌肛试子采集自然排出的新鲜粪便,低速离心后1∶8稀释进行推片行革... 详细信息

目的探讨超重与偏瘦大学生群体肠道菌群分布是否存在差别,探索两个群体肠道菌群微生态分布特点。方法以BMI≥24(超重)及BMI≤18.5(偏瘦)的青岛大学学生为研究对象,用无菌肛试子采集自然排出的新鲜粪便,低速离心后1∶8稀释进行推片行革兰染色,选择菌膜体尾交界染色均匀处3个视野油镜镜检细菌总数、形态特点和各类菌组成比例,通过粪便涂片中细菌总数、革兰阳性杆菌、阴性杆菌、阳性球菌、阴性球菌的比率进行粪便菌群分析。结果超重群体革兰阳性菌比例小于偏瘦群体分别为62.46%和68.44%;超重群体的球菌/杆菌比值为2.66,偏瘦群体球菌/杆菌比值为4.83;超重群体和偏瘦群体球菌G(+)/G(-)比值分别为1.81和2.00;杆菌中G(+)/G(-)比值分别为1.41和2.45。结论大学生超重与偏瘦群体肠道菌群存在一定差异。

关键词：大学生超重偏瘦肠道菌群

慢性心力衰竭患者服用ghrelin对其左室功能、运动耐量和肌肉萎缩的影响

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世界核心医学期刊文摘（心脏病学分册） 2005年第6期1卷 43-43页

作者： nagaya n. Moriya J. Yasumura Y. 杜媛 Dr.Department of Internal Medicine National Cardiovascular Center 5-7-1 Fujishirodai Suita Osaka 565-8565Japan

Background-Ghrelin is a novel growth hormone-releasing peptide that also induces vasodilation, inhibits sympathetic nerve activity, and stimulates feeding through growth hormone-independent mechanisms. We investigated the effects of ghrelin on left ventricular(LV)function, exercise capacity, and muscle wasting in patients with chronic heart failure(CHF). Methods and results-Human synthetic ghrelin(2 μm/kg twice a day)was intravenously administered to 10 patients with CHF for 3 weeks. Echocardiography, cardiopulmonary exercise testing, dual x-ray absorptiometry, and blood sampling were performed before and after ghrelin therapy. A single administration of ghrelin elicited a marked increase in serum GH(25-fold). Three-week administration of ghrelin resulted in a significant decrease in plasma norepinephrine(1132±188 to 655±134 pg/mL; Pn increased LV ejection fraction(27±2%to 31±2%; Pn association with an increase in LV mass and a decrease in LV end-systolic volume. Treatment with ghrelin increased peak workload and peak oxygen consumption during exercise. Ghrelin improved muscle wasting, as indicated by increases in muscle strength and lean body mass. These parameters remained unchanged in 8 patients with CHF who did not receive ghrelin therapy. Conclusions-These preliminary results suggest that repeated administration of ghrelin improves LV function, exercise capacity, and muscle wasting in patients with CHF.

关键词：慢性心力衰竭左室功能运动耐量肌肉萎缩 ghrelin 运动试验交感神经活动射血分数收缩末容积静脉途径

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利用FOM肉脂仪测定猪胴体性状的研究

四川畜牧兽医 2003年第12期30卷 25-26页

作者：姜延志王超李学伟朱砺四川农业大学动物科技学院四川雅安625014

随机抽取屠宰生猪1988头,利用FOM肉脂仪测定胴体瘦肉率(lean)、最后肋骨处膘厚(P2)、倒数3、4肋骨之间膘厚(RF)和眼肌厚(RM)。并称量每头猪的胴体重(WT)。利用SAS软件分析胴体性状的平均数、变异程度和各性状间的相关性。结果表明:省内... 详细信息

随机抽取屠宰生猪1988头,利用FOM肉脂仪测定胴体瘦肉率(lean)、最后肋骨处膘厚(P2)、倒数3、4肋骨之间膘厚(RF)和眼肌厚(RM)。并称量每头猪的胴体重(WT)。利用SAS软件分析胴体性状的平均数、变异程度和各性状间的相关性。结果表明:省内生猪胴体品质较差,主要表现为背膘较厚、眼肌厚度薄、胴体瘦肉率低、胴体重偏轻,且各性状的变异程度大;胴体性状间存在较高的表型相关,lean与P2、RF、WT呈强烈负相关,P2、RF、RM、WT之间存在极显著的正相关,lean与RM之间具有正相关趋势。

关键词： FOM肉脂仪测定技术猪胴体性状胴体瘦肉率肋骨处膘厚

Studies on Reducing nitrogen Excretion: Ⅰ. net Energy Requirement of Finishing Pigs Maximizing Performance and Carcass Quality Fed Low Crude Protein Diets Supplemented with Crystalline Amino Acids

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Journal of Animal Science and Biotechnology 2011年第2期2卷 84-93页

作者： Hongyu Chen Xuewu Yi Guijie Zhang ning Lu Licui Chu P. A. Thacker Shiyan Qiao Ministry of Agriculture Feed Industry Centre State Key Laboratory of Animal Nutrition China Agricultural University Beijing 100193 China Department of Animal and Poultry Science University of Saskatchewan Saskatoon Saskatchewan STNSA8 Canada

Two experiments were conducted to in- vestigate the effects of net energy （nE） level on the performance and carcass traits of finishing pigs fed low crude protein （CP） diets supplemented with crystalline amino acids （CAA）. A total of 216 （Exp. 1） and 360 （Exp. 2 ） barrows （ Yorkshire × Landrace× Duroc ） were allotted to one of six treatments （n =6）. The experimental diets were based on corn and soybean meal, and consisted of a high-CP diet that contained approximately 16% CP and 2.50 Mcal/kg of nE as well as five low-CP diets in which the CP level of the diet was reduced by approximately four percentage units but was supplemented with crystalline lysine, methionine, threonine, and tryptophan. The low CP diets provided 2.64, 2.58, 2.50, 2.42, or 2.36 Mcal/kg in Exp. 1 as well as 2.45, 2.40, 2.35, 2.30, or 2.25 Mcai/kg in Exp.2. In Exp. 1, a linear （P=0.03） increase in weight gain was observed with decreasing nE level while the ratio of gain to feed was unaffect- ed （P 〉 0.05） by nE level. There was a linear in-crease （P = 0.01 ） in the percentage of fat-free lean and a linear decrease （ P = 0.03 ） in the percentage of total fat with decreasing nE levels. In Exp. 2, a sig- nificant quadratic （ P = 0.03 ） effect of nE level was observed for weight gain. The ratio of gain to feed demonstrated a significant （P 〈0.01 ） quadratic effect with pigs fed 2.35 and 2.40 Mcal/kg of nE, Pigs fed the diet containing 2.40 Mcal/kg of nE had the lowest percentage of total fat （36. 95% ） and the highest percentage of fat-free lean （49.36%）. The overall results of these experiments indicate that feed- ing either a surplus or a deficiency of nE is detrimen- tal to both pig performance and carcass composition when low CP diets supplemented with CAA are fed. Our results indicate that when the CP content of the diet is reduced by four percentage units and the diet is properly supplemented with CAA, maximum per- formance and carcass quality will be obtained if the diet provides approximately

关键词： carcass quality finishing pigs low protein diets net energy performance