检索结果-南通市图书馆

Review on the state-of-the-art and challenges in the MgB_(2)component manufacturing for superconducting applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Superconductivity 2024年第1期9卷 50-64页

作者： fabiano Carvalho de Castro Sene Department of Industrial and Systems Engineering University of TennesseeKnoxvilleUnited States

Since the discovery of MgB_(2)as a superconductor,several research groups worldwide have studied the superconducting mechanisms due to the dual gap nature of MgB_(2),as well as attempted to produce such a compound in wires,tapes,bulks,and thin films for a plethora of *** MgB_(2)carries the promise of replacing Niobium‐based superconductors in low‐field applications,less‐than‐desirable performance and in‐operation stability has slowed down such a *** the properties and nature of the superconductivity of MgB_(2)are fairly known,the reproduction of its properties at manufacturing scales remains an unsolved ***,this manuscript presents a systematic review on fundamental properties,phase formation,growth kinetics,and superconducting properties of MgB_(2)‐based components such as multi‐and mono‐core wires,bulks,and thin ***,challenges,and shortcomings are utilized in consolidating research questions and directions pertaining to the manufacturing of MgB_(2)superconducting ***,we evaluate the technological readiness of MgB_(2)‐based devices for applications in fusion energy systems.

关键词： MgB_(2) Superconductor manufacturing Technology readiness Review Low‐Field applications

The effect of abiotic stresses on plant C:N:P homeostasis and their mitigation by silicon

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Crop Journal 2024年第2期12卷 340-353页

作者： Milton Garcia Costa Renato de Mello Prado Luiz fabiano Palaretti Jonas Pereira de Souza Júnior Department of Agricultural Production Science School of Agricultural and Veterinarian SciencesSão Paulo State UniversityJaboticabalBrazil

In crop plants, various environmental stresses affect the balance of carbon, nitrogen, and phosphorus(C:N:P), leading to biochemical and physiological alterations and reductions in yield. Silicon(Si) is a beneficial element that alleviates plant stress. Most studies involving silicon have focused on physiological responses, such as improvements in photosynthetic processes, water use efficiency, and antioxidant defense systems. But recent research suggests that stressed plants facing either limited or excessive resources(water, light, nutrients, and toxic elements), strategically employ Si to maintain C:N:P homeostasis, thereby minimizing biomass losses. Understanding the role of Si in mitigating the impact of abiotic stresses on plants by regulating C:N:P homeostasis holds great potential for advancing sustainable agricultural practices in crop production. This review presents recent advances in characterizing the influence of environmental stresses on C:N:P homeostasis, as well as the role of Si in preserving C:N:P equilibrium and attenuating biological damage associated with abiotic stress. It underscores the beneficial effects of Si in sustaining C:N:P homeostasis and increasing yield via improved nutritional efficiency and stress mitigation.

关键词： Nutritional stoichiometry Elemental stoichiometry Beneficial element Environmental stresses Nutritional efficiency Carbon use efficiency Agricultural sustainability

Harnessing marine microbiomes to develop a sustainable,all-Atlantic bioeconomy

在线全文

学校读者我要写书评

暂无评论

mLife 2024年第2期3卷 163-166页

作者： Cristiane Thompson Alice C.Ortmann Henk Bolhuis Thulani Makhalanyane fabiano Thompson Institute of Biology Federal University of Rio de Janeiro(UFRJ)Rio de JaneiroBrazil Fisheries and Oceans Canada Bedford Institute of OceanographyDartmouthNova ScotiaCanada Department of Marine Microbiology and Biogeochemistry Royal Netherlands Institute for Sea Research(NIOZ)The Netherlands Department of Microbiology School of Data Science and Computational ThinkingStellenbosch UniversityStellenboschSouth Africa

Marine microbiomes are integral to the functioning of a healthy ocean and have the potential to be key contributors toward an all-Atlantic sustainable blue bioeconomy(Figure 1).New compounds may be developed based on these *** Atlantic Ocean is a biodiversity *** All-Atlantic Ocean Research and Innovation Alliance(AAORIA)Declaration,signed in 2022 in Washington,DC,is a promising mechanism to move forward marine microbiome science,technology,and innovation.

关键词： Atlantic marine ocean

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

含水率和冻融循环对筋土界面剪切特性的影响

中南大学学报（自然科学版） 2024年第2期55卷 586-594页

作者：孟亚徐超贾斌左彬澧同济大学地下建筑与工程系上海200092 同济大学岩土及地下工程教育部重点实验室上海200092 中国电力工程顾问集团华东电力设计院有限公司上海200063

制作了一套可实现温度控制的筋土界面直剪试验设备。为了研究含水率、界面温度、冻融循环次数对筋土界面剪切特性的影响,开展11组土工格栅-砂土界面直剪试验。研究结果表明,筋土界面的黏聚力和摩擦角均随含水率的增加而减小,当含水率提... 详细信息

制作了一套可实现温度控制的筋土界面直剪试验设备。为了研究含水率、界面温度、冻融循环次数对筋土界面剪切特性的影响,开展11组土工格栅-砂土界面直剪试验。研究结果表明,筋土界面的黏聚力和摩擦角均随含水率的增加而减小,当含水率提高时,筋土间的抗剪强度减弱。加筋可显著提高冻土的抗剪强度,当界面温度为-10℃时,土工格栅-砂土界面剪应力峰值较冻结后砂土的剪应力增加了约20%。筋土界面剪应力随着界面温度的降低而增大,当界面温度在0℃以下时,剪应力较大且剪应力-剪切位移曲线会出现峰值强度和残余强度,而在无冻结情况下,筋土界面剪应力稳定值基本相同。冻融循环后筋土界面的抗剪强度减小,筋土界面的黏聚力和摩擦角均随着冻融循环次数的增加而减小,但在4次冻融循环后趋于稳定。研究成果可为冻土地区土工格栅加筋土结构的设计和应用提供理论依据。

关键词：土工格栅直剪试验筋土界面剪切特性冻融循环

Complexed amino acid minerals ***-glycinate chelated minerals:Impact on the performance of old laying hens

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2024年第1期16卷 395-408页

作者： Marcos J.B.Santos Maria C.M.M.Ludke Leandro M.Silva Carlos B.V.Rabello Mércia R.Barros fabiano S.Costa Clariana S.Santos Jamille S.S.Wanderley Department of Animal Science Rural Federal University of PernambucoRecifePEBrazil Department of Veterinary Science Rural Federal University of PernambucoRecifePEBrazil

The present study was to evaluate the effect of trace minerals(Zn,Mn,and Cu)from complexed amino acid minerals(ZMCAA)and bis-glycinate chelated minerals(ZMCGly)in laying hen diets on performance,internal and external egg quality,yolk mineral deposition,intestinal morphometry,and bone *** 78 to 98 weeks of age,400 White LSL-Lite strain laying hens were distributed in a randomized design with 4 treatments with 10 replicates per *** were distributed in a 2×2 factorial arrangement using either Zn,Mn,and Cu of ZMCAA or ZMCGly source at 2 levels:low(20,20,and 3.5 mg/kg of Zn,Mn,and Cu,respectively)or high(40,40,and 7 mg/kg of Zn,Mn,and Cu,respectively).The analysis of variance was performed,and in cases where differences were observed,the means were compared using Tukey?s test(P<0.05).The source and level of trace mineral supplementation had a significant impact on the performance of laying *** fed ZMCAA had higher egg production(P=0.01),egg weight(P=0.02),egg mass(P=0.01),and lower feed conversion ratio(P=0.05)compared to those fed *** ZMCAA supplementation showed higher albumen height(P=0.01),albumen weight(P=0.01),and eggshell thickness(P<0.01).The deposition of Zn(P<0.01),Mn(P<0.01),and Cu(P<0.01)in the egg yolk was greater for hens received *** weight(P=0.04)and bone densitometry(P<0.01)in the tibia were higher with ZMCAA *** the small intestine,ZMCAA resulted in longer villi(P=0.02)and shorter crypt depth(P=0.01)in the *** and ileum measurements were influenced by the level and source of trace minerals(P<0.05).Laying hens fed ZMCAA exhibited superior performance,egg quality,deposition of trace minerals in the egg yolk,and bone density compared to hens fed *** this study,older laying hens supplemented with ZMCAA at lower levels demonstrated adequate levels of supplementation.

关键词： Bis-glycinates Metal-amino acids Radiodensity Trace minerals

在线全文

学校读者我要写书评

暂无评论

国家审计助推共同富裕实现路径探索

安康学院学报 2024年第4期36卷 117-121页

作者：周彬西安理工大学马克思主义学院陕西西安710054 西安财经大学人事处陕西西安710100

扎实推进共同富裕关系国家繁荣和民生福祉。国家审计是党和国家监督体系的重要组成部分,是推动国家治理体系和治理能力现代化的重要力量,也是推动实现共同富裕的重要监督力量。要紧扣增进民生福祉强化审计监督,助力实现共同富裕。本文... 详细信息

扎实推进共同富裕关系国家繁荣和民生福祉。国家审计是党和国家监督体系的重要组成部分,是推动国家治理体系和治理能力现代化的重要力量,也是推动实现共同富裕的重要监督力量。要紧扣增进民生福祉强化审计监督,助力实现共同富裕。本文在阐释共同富裕内涵的基础上,分析了新时代国家审计的功能定位及其对推动实现共同富裕的重要作用,探讨了国家审计助推实现共同富裕的具体路径。

关键词：共同富裕国家审计现实路径

浅埋深中厚煤层预掘回撤通道支护技术研究与应用

在线全文

学校读者我要写书评

暂无评论

煤炭技术 2024年第1期43卷 1-4页

作者：胡滨煤炭科学研究总院开采研究分院北京100013 中煤科工开采研究院有限公司北京100013

为进一步提高综采工作面末采回撤速度、确保设备回撤空间,采用理论计算、现场试验相结合的方法对浅埋深中厚煤层预掘回撤通道支护技术进行初步研究,建立了工作面残余煤柱承载力学模型,理论分析得知残余煤柱宽度对煤柱承载性能的时空演... 详细信息

为进一步提高综采工作面末采回撤速度、确保设备回撤空间,采用理论计算、现场试验相结合的方法对浅埋深中厚煤层预掘回撤通道支护技术进行初步研究,建立了工作面残余煤柱承载力学模型,理论分析得知残余煤柱宽度对煤柱承载性能的时空演化规律具有重要影响,末采期间残余窄煤柱出现区域性脆性破坏失稳状态是导致超前采动应力、顶板岩层断裂线前移的主要原因。现场试验末采段残余煤柱宽度约5 m时,整条窄煤柱在多重载荷作用下发生屈服,进而呈现大面积失稳破碎状态,巷内支护体承载受力急剧增加,锚索最大受力约为225 kN,最大顶底板移近量出现在通道中部靠工作面侧,约为100 mm,结果表明,采用高预应力强力锚杆(索)联合支护结构配合垛式支架外部支撑,可有效控制末采期间预掘回撤通道顶底板之间的闭合位移,为类似条件下预掘回撤通道支护提供工程借鉴。

关键词：浅埋深预掘回撤通道残余煤柱断裂线应力

Chemical strategies and biomedical applications of DNA hydrogels

在线全文

学校读者我要写书评

暂无评论

Fundamental Research 2023年第4期3卷 534-536页

作者： bini Zhou Cuifeng Li Dongsheng Liu Wanli Liu Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Membrane Biology School of Life SciencesInstitute for ImmunologyBeijing Advanced Innovation Center for Structural BiologyCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesBeijing Key Lab for Immunological Research on Chronic DiseasesTsinghua UniversityBeijing 100084China Tsinghua-Peking Center for Life Sciences Beijing 100084China

*** Deoxyribonucleic acid(DNA)is a digital polymer that,in addition to being the carrier of genetic information in biological systems,can also act as building blocks for the fabrication of *** accordance with the rapid development of DNA synthesis technologies,DNA has also been utilized as a fantastic type of brick for the construction of sophisticated supramolecular materials,especially DNA *** to its favorable biocompatibility and designable responsiveness,there have been emerging efforts to demonstrate the application of DNA hydrogels in biomedicine,with encouraging ***,we highlight the recent advances of chemical strategies and biomedical applications of DNA hydrogels.

关键词： hydrogel utilized synthesis

Clinical outcomes of non-operative management and clinical observation in non-angioembolised hepatic trauma: A systematic review of the literature

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Traumatology 2022年第5期25卷 257-263页

作者： Francesco Virdis Mauro Podda Salomone Di Saverio Jayant Kumar Roberto bini Carlos Pilasi Isabella Reccia Trauma and Acute Care Surgery Unit Ospedale NiguardaMilano20162Italy General and Emergency Surgery Policlinico Universitario di MonserratoCagliari0910 Italy General and Endocrine Surgery Ospedaledi CircoloFondazione MacchiVarese21100 Italy Abdominal Transplantation Surgery University of ChicagoChicago5801USA General and Trauma Surgery San Juan de Dios HospitalSantiago8350488Chile Haepato-Biliary-Pancreatic Uni Hammersmith Hospital Imperial CllegeLondonW120TSUK

Purpose: Liver is the most frequently injured organ in abdominal trauma. Today non-operative management (NOM) is considered as the standard of care in hemodynamically stable patients, with or without the adjunct of angioembolisation (AE). This systematic review assesses the incidence of complications in patients who sustained liver injuries and were treated with simple clinical observation. Given the differences in indications of treatment and severity of liver trauma and acknowledging the limitations of this study, an analysis of the results has been done in reference to the complications in patients who were treated with AE. Methods: A systematic literature review searched "liver trauma" , "hepatic trauma" , "conservative management" , "non operative management" on MEDLINE (via PubMed), Cochrane Central Register of Controlled Trials databases, EMBASE, and Google Scholar, to identify studies published on the conservative management of traumatic liver injuries between January 1990 and June 2020. Patients with traumatic liver injuries (blunt and penetrating) treated by NOM, described at least one outcome of interests and provided morbidity outcomes from NOM were included in this study. Studies reported the outcome of NOM without separating liver from other solid organs;studies reported NOM complications together with those post-intervention;case reports;studies including less than 5 cases;studies not written in English;and studies including patients who had NOM with AE as primary management were excluded. Efficacy of NOM and overall morbidity and mortality were assessed, the specific causes of morbidity were investigated, and the American Association for the Surgery of Trauma classification was used in all the studies analysed. Statistical significance has been calculated using the Chi-square test. Results: A total of 19 studies qualified for inclusion criteria were in this review. The NOM success rate ranged from 85% to 99%. The most commonly reported complications

关键词： Liver Trauma Non-operative management Angioembolization