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铁磁绝缘体中磁振子的非平衡稳态输运性质

物理学报 2024年第14期73卷 214-221页

作者：杨栋超易立志丁林杰刘敏朱丽娅许云丽何雄沈顺清潘礼庆 john Q.Xiao 三峡大学理学院湖北省弱磁探测工程技术研究中心宜昌443002 三峡学院物理系重庆404100 香港大学物理系中国香港999077 Department of Physics and Astronomy University of DelawareNewark 19716USA

玻色子体系中的非平衡输运过程研究是极具挑战性的工作.磁振子是玻色子,具有与电子等费米子截然不同的自旋输运行为.本文以钇铁石榴石(YIG)铁磁绝缘体为研究对象,聚焦影响稳态下YIG中磁振子非平衡输运过程的关键因素.通过将具有非零化... 详细信息

玻色子体系中的非平衡输运过程研究是极具挑战性的工作.磁振子是玻色子,具有与电子等费米子截然不同的自旋输运行为.本文以钇铁石榴石(YIG)铁磁绝缘体为研究对象,聚焦影响稳态下YIG中磁振子非平衡输运过程的关键因素.通过将具有非零化学势μm的玻色-爱因斯坦统计函数引入到玻尔兹曼输运方程中,获得了以为幂次的输运方程严格解析表达式(当α(=-μm/(k_(B)t))t~1K/mm和10^(4)K/mm)下非平衡磁振子浓度δn_(m)和化学势μm的空间分布,它们分别对应于μm的值约为-0.1μeV和-6.2meV,均满足前提条件α<1.在远离平衡态的大温度梯度分布下,本文理论计算与实验结果吻合很好.这些理论研究结果将加深人们对铁磁绝缘体中磁振子非平衡输运行为的认识.

关键词：磁振子非平衡输运化学势磁振子扩散方程玻尔兹曼输运方程

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手捧空花盆的孩子

空中英语教室（初级版．大家说英语） 2024年第2期 25-27,52,53页

作者： john telfer 不详

找找看国王给了每个孩子什么东西?从前,有一位非常有智慧的国王。他的年纪很大了,而且没有子女。他下令让他的子民把他们的孩子都带到王宫来。“现在是选择下一任国王的时候了,”他说,“我会从这些孩子当中选出一个人。”人们非常兴奋,... 详细信息

找找看国王给了每个孩子什么东西?从前,有一位非常有智慧的国王。他的年纪很大了,而且没有子女。他下令让他的子民把他们的孩子都带到王宫来。“现在是选择下一任国王的时候了,”他说,“我会从这些孩子当中选出一个人。”人们非常兴奋,他们带着孩子来到了王宫。

关键词：子民花盆国王

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伊索寓言

空中英语教室（初级版．大家说英语） 2024年第4期 12-14,51页

作者： john telfer 不详

一头老狮子住在一个洞穴里。它的动作已经变得迟缓,所以很难抓到食物。“我该怎么办?”它心想,“我已经没办法又跑又跳了,再过不久一定会饿死。”它想了又想。“我知道了!可以让食物接近我啊。我会假装生病,这样其他动物就会来看我,然... 详细信息

一头老狮子住在一个洞穴里。它的动作已经变得迟缓,所以很难抓到食物。“我该怎么办?”它心想,“我已经没办法又跑又跳了,再过不久一定会饿死。”它想了又想。“我知道了!可以让食物接近我啊。我会假装生病,这样其他动物就会来看我,然后我再吃掉它们!”一开始,它的计划进行得很顺利,它躺在它的洞穴里哭泣。动物们听到它的声音,都感到很担心,就进去看它。狮子邀请它们进入洞穴之后,就会把它们吃了!有一天,一只狐狸从洞穴旁边经过。它听到一个声音,是老狮子在洞穴里哭。狐狸站在外面。“你还好吗?”它问狮子。

关键词：伊索寓言洞穴狐狸狮子声音食物生病动物

Effect of Different Mulching Materials on Growth Parameters and Yield of Okra (Abelmoschus esculentus) Production in Minna, Nigeria

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Open Journal of Forestry 2024年第3期14卷 197-213页

作者： Ebierin Akpoebidimiyen Otuaro john Jiya Musa Mohammed Musa Isah Abayomi Ibrahim Kuti Muhammad Yusuf Salihu Department of Civil Engineering Faculty of Engineering Maritime University Okerenkoko Nigeria Department of Agriculture and Bioresources Engineering Federal University of Technology Minna Nigeria

During the 2022 growing season (August to November) at the Federal University of technology, Minna School farm, Niger State, an experiment was conducted to investigate the influence of mulching on Okras growth, yield, and moisture content was examined across four distinct growth stages (initial, development, mid, and late) and at varying soil depths (0 - 30 cm and 30 - 60 cm). the study employed a randomised complete block design with four replications, encompassing control (t0), groundnut shells mulch (t1), black polythene mulch (t2), and white polythene mulch (t3) as treatments. the highest average Okra fresh pod yield, amounting to 23.4 t/ha, was achieved by implementing white plastic mulch, contrasting with the control treatment, which yielded the lowest at 22 t/ha. Notably, the control plots exhibited yield reductions of up to 32% compared to the plots employing white plastic mulching. the utilisation of mulch had a notable impact on the overall crop yield, with the superior quality evident in the treatment employing white plastic mulch (26 t/ha). the control treatment exhibited the lowest quality at 24.3 t/ha. Groundnut shell mulch influenced moisture conservation, but no significant variance was observed compared to the control plots. therefore, the study suggests that polythene mulch may be the most suitable type to enhance the quality of okra production by conserving soil moisture. Among the biodegradable and non-biodegradable mulches used in this study, white polythene mulch was the most effective.

关键词： Crop Groundnut Shell Mulch Plastic Pod Soil

Functional lumen imaging probe use in a high-volume practice:Practical and technical implications

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World Journal of Gastrointestinal Endoscopy 2024年第7期16卷 396-405页

作者： Yan Jiang Raul Vazquez-Reyes Afrin Kamal thomas Zikos George triadafilopoulos john O Clarke Division of Gastroenterology and Hepatology Stanford University School of MedicineRedwoodCA 94063United States

BACKGROUND the functional lumen imaging probe(FLIP)is a Food and Drug Administration approved tool to aid the diagnosis and management of esophageal ***,widespread adoption of FLIP remains limited and its utility in highvolume practices remains *** to analyze large sample data on clinical use of FLIP and provide insight on several technical aspects when performing *** We conducted a retrospective comparative and descriptive analysis of FLIP procedures performed by a single provider at an academic medical *** was a total of 398 FLIP procedures *** medical records were reviewed and data regarding demographics and procedural details were *** tests,including chi-squared,t-test,and multivariable logistic and linear regression,were *** there was an increase in FLIP cases with each successive time period of 13 months(n=68,146,184,respectively)with notable rises specifically for indications of dysphagia and gastroesophageal reflux *** was a shift toward use of the longer FLIP balloon catheter for diagnostic purposes(overall 70.4%vs 29.6%,Ption with other diagnostics/interventions,such as dilation and wireless pH probe *** were nearly equally performed with anesthesia vs moderate sedation(51.4%anesthesia),with no major *** who had anesthesia were less likely to have recurrent antegrade contractions[odds ratio(OR)=0.4,95%CI:0.3-0.8]and were also more likely to have absent contractility(OR=2.4,95%CI:1.3-CONCLUSION FLIP cases have increased in our practice with expanding indications for its *** limited normative data,providers should be aware of several potential technical issues,including the possible impact of sedation choice when assessing esophageal motility patterns.

关键词： Gastroenterology Endoscopy Functional lumen imaging probe Esophagus Motility

Extended pelvic side wall excision for locally advanced rectal cancers

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World Journal of Gastroenterology 2017年第46期23卷 8261-8262页

作者： Irshad A Shaikh john t Jenkins Department of Surgery Norfolk and Norwich University Hospital St Mark’s Hospital

Extended pelvic side wall excision is a useful technique for treatment of recurrent or advanced rectal cancer involving sciatic notch and does not compromise the dissection of major pelvic vessels and vascular control.

关键词： Recurrent rectal cancers Extended pelvic side wall excision Pelvic side wall excision Advanced rectal cancers

Patients’experiences with‘sludge’(administrative burden)in the cancer screening process and its relationship with screening completion,experience and health system distrust

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Family Medicine and Community Health 2024年第S2期12卷 8-17页

作者： Michelle S Rockwell Brianna Chang Vivian Zagarese Jamie K turner Ally Southworth YingXing Wu Paul Yeaton Li Li Jeffrey S Stein Sarah H Parker john W Epling Department of Family and Community Medicine Virginia Tech Carilion School of MedicineRoanokeVirginiaUSA Department of Family and Community Medicine Carilion ClinicRoanokeVirginiaUSA Virginia tech Carilion School of Medicine RoanokeVirginiaUSA Department of Health Systems and Implementation Science Virginia Tech Carilion School of MedicineRoanokeVirginiaUSA Graduate Program in translational Biology Medicineand HealthVirginia TechRoanokeVirginiaUSA Health Analytics Research team Carilion ClinicRoanokeVirginiaUSA Division of Gastroenterology Department of Internal MedicineCarilion ClinicRoanokeVirginiaUSA Department of Family Medicine University of Virginia School of MedicineCharlottesvilleVirginiaUSA Center for Health Behaviors Research Fralin Biomedical Research Institute at VTCRoanokeVirginiaUSA

Objective‘Sludge’refers to administrative burdens or frictions that preclude people from getting what they want or need(eg,duplicative forms,complicated instructions,long waiting times).this mixed methods study evaluated patients’perceptions of sludge in the colorectal cancer(CRC)screening process and some impacts of this *** We employed an exploratory sequential mixed methods study design that comprised patient interviews and a patient *** interviews informed final survey revisions and captured contextual data about patients’experiences with *** transcripts were inductively and deductively analysed to identify overarching *** survey quantified sludge,delayed or forgone screenings,screening experience(Net Promoter Score)and health system distrust(Health System Distrust Scale).We usedχ2 or t-tests for univariable comparisons and logistic or linear regressions to evaluate the association between cumulative sludge score and delayed or forgone screenings,screening experience and health system *** were integrated for *** Southeastern United *** Patients who were 45–75 years of age,at average risk for CRC and had either completed or been referred for CRC screening(colonoscopy or stool-based test)within the previous 12 *** 22 interview participants and 255 survey participants completed the study.38(15%)survey participants rated their screening experience as poor(Net Promoter Score=0–7 out of 10).the mean(SD)Health System Distrust Scale score was 22.4(6.3)out of 45 possible points(higher score=greater distrust).Perceptions of sludge in the CRC screening process varied,with long waiting times and burdensome communication being the most common sources(58%and 35%of participants,respectively).Sludge was positively associated with delayed or forgone screenings(OR=1.42,95%CI 1.28,1.57,pth system distrust(β=0.47,p

关键词： sludge screening burden

Enhancing Canola Yield and Photosynthesis under Water Stress with Hydrogel Polymers

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1623-1645页

作者： Elham A.Badr Gehan Sh.Bakhoum Mervat Sh.Sadak Ibrahim Al-Ashkar Mohammad Sohidul Islam Ayman El Sabagh Magdi t.Abdelhamid Field Crops Research Department National Research CentreCairo12622Egypt Botany Department National Research CentreCairo12622Egypt Plant Production Department College of Food and Agriculture SciencesKing Saud UniversityRiyadh12271Saudi Arabia Department of Agronomy Hajee Mohammad Danesh Science and Technology UniversityDinajpur5200Bangladesh Department of Field Crops Faculty of AgricultureSiirt UniversitySiirt56100Turkey Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafrelsheikh33516Egypt Department of Research Centers Montana State UniversityBozemanMT 59717USA

While Egypt’s canola production per unit area has recently grown,productivity remains low,necessitating increased *** are water-absorbent polymer compounds that can optimize irrigation schedules by increasing the soil’s ability to retain ***,twoﬁeld experiments were conducted to examine hydrogel application to sandy soil on canola growth,biochemical aspects,yield,yield traits,and nutritional quality of yielded seeds grown under water deﬁcit stress *** experiments were conducted by arranging a split-plot layout in a randomized complete block design(RCBD)with three times replications of each *** water stress at 75%or 50%of crop evapotranspiration(Etc)lowered chlorophyll a,chlorophyll b,caro-tenoids,and total pigments content,indole-3-acetic acid,plant development,seed yield,and oil and total carbo-hydrates of seed yield,hydrogel treatment enhanced all of the traits mentioned ***,hydrogel enhanced to gather compatible solutes(proline,amino acids,total soluble sugars),phenolics content in leaves,seed protein,and crop water productivity,which increased while the plants were under water *** results revealed that the full irrigation(100%Etc)along with hydrogel compared to water-stressed(50%Etc)led to enhanced seed yield(kg ha^(-1)),Oil(%),and total carbohydrates(%)of rapeseed by 57.1%,11.1%and 15.7%,***,under water-stressed plots with hydrogel exhibited enhancement by 10.0%,3.2%and 5.1%in seed yield(kg ha^(-1)),oil(%),and total carbohydrates(%)of rapeseed by 57.1%,11.1%and 15.7%,respec-tively compared to *** a result,the use of hydrogel polymer will be a viable and practical solution for increasing agricultural output under water deﬁcit stress situations.

关键词： Hydrogel oil osmolytes rapeseed yield water stress

Identification of isopeptidase activity in the midgut of insects： Purification, properties and nutritional ecology of a Hofmannophila pseudospretella （Lepidoptera： Oecophoridae） larval enzyme

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Insect Science 2010年第4期17卷 325-334页

作者： Robert M. Simpson john t. Christeller Plant and Food Research Institute Tennant Drive Palmerston North 4474 Private Bag 11 030 New Zealand

A γ-glutamyl transpeptidase （isopeptidase） has been purified 580-fold to homogeneity from the midgut of keratinophagous larvae of Hofmannophila pseudospretella. the enzyme is a single polypeptide of molecular mass 80 kDa. the enzyme was identified by its hydrolytic activity against the synthetic substrate, γ-glutamyl-AMC, its molecular mass and inhibition profile compared to other γ-glutamyl transpeptidases. the enzyme is low or absent from most other insect digestive systems apart from other keratinophagous lepidopteran larvae and predatory carabids. While isopepfide bonds are present in high levels of the proteins in the diet of keratinophages, their presence in the diet of predatory beetles has not been established.

关键词： γ-glutamyl transpeptidase Hofmannophila pseudospretella isopeptidase,keratinophagous nutritional ecology