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An Alternative Approach for the Determination of Soil Water Mobility

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Pedosphere 2008年第3期18卷 328-334页

作者： M.P.C.eNGLeR R.CICHOTA Q.De JONG VAN LIeR e.M.BLOeM G.SPAROVeK e.schnug University of Sao Paulo C.P.9Piracicaba(SP) 13418-900(Brazil) Institute of Natural Resources Massey UniversityP.O.Box 11 222Palmerston North(New Zealand) University of Sao Paulo C.P.9Piracicaba(SP) 13418-900(Brazil)Institute of Natural ResourcesMassey UniversityP.O.Box 11 222Palmerston North(New Zealand) Institute for Crop and Soil Science (JKI) Federal Research Centre for Cultivated PlantsBundesallee 50D-38116 Braunschweig(Germany)

A new laboratory method was proposed to establish an easily performed standard for the determination of mobile soil water close to real conditions during the infiltration and redistribution of water in a soil. It consisted of applying a water volume with a tracer ion on top of an undisturbed ring sample on a pressure plate under a known suction or pressure head. Afterwards, soil water mobility was determined by analyzing the tracer-ion concentration in the soil sample. Soil water mobility showed to be a function of the applied water volume. No relation between soil water mobility and applied pressure head could be established with data from the present cxperiment. A simple one- or two-parameter equation can be fitted to the experimental data to parameterize soil water mobility as a function of applied solute volume. Sandy soils showed higher mobility than loamy＂ soils at low values of applied solute volumes, and both sandy and loamy soils showed an almost complete mobility at high applied solute volumes.

关键词： laboratory method mobile-immobile water pressure head soil texture

内蒙古典型草原主要土壤类型和植物硫状况的研究(英文)

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植物生态学报 2001年第4期25卷 465-471页

作者：汪诗平王艳芬陈佐忠崔骁勇 e.schnug .S.Haneklaus 中国科学院植物研究所植被数量生态学开放研究实验室北京100093 InstituteofPlantNutrientandSoilScience

通过对内蒙古典型草原 4种主要土壤类型及 12 2种主要植物硫含量的分析 ,并与主要放牧家畜的营养需要相结合 ,综合评价了内蒙古典型草原硫的营养状况。研究表明 :4种主要土壤类型不同层次 (0 .2～ 0 .4m ,0 .1～0 .2 m和 0～ 0 .1m )的... 详细信息

通过对内蒙古典型草原 4种主要土壤类型及 12 2种主要植物硫含量的分析 ,并与主要放牧家畜的营养需要相结合 ,综合评价了内蒙古典型草原硫的营养状况。研究表明 :4种主要土壤类型不同层次 (0 .2～ 0 .4m ,0 .1～0 .2 m和 0～ 0 .1m )的土壤中有机硫的含量变化很大 ,为 17～ 397μg· g- 1 ,有机硫的含量与土壤中有机碳和全氮含量呈高度正相关。土壤中平均无机硫含量低于 10μg· g- 1 ,但黑钙土土壤中无机硫的含量较高 ,达 2 0μg· g- 1 左右。土壤中微生物硫含量占土壤中全硫含量的 1.78%～ 2 .80 %。所测定的 12 2种主要植物中有 75 %的植物体内硫含量低于 0 .16 % ,氮 /硫比大于 14∶ 1;与主要放牧家畜的营养需要相比 ,有约 80 %的植物缺硫。植物体中硫的含量与土壤中有效硫的含量显著正相关。

关键词：内蒙古典型草原植物土壤类型硫含量

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蔬菜的硫素营养与品质

土壤学进展 1992年第4期20卷 51-52,56页

作者： e.schnug 戴平安

本文叙述了硫素营养状况对蔬菜品质的显著作用。硫素供给不足,蔬菜将出现明显的缺硫症状。施用硫肥是降低植物对有毒元素砷或锑等吸收的有效措施,也是预防植物过量吸收重金属镉或锌等的有效手段。施硫可增加蔬菜必需氨基酸含量,特别是... 详细信息

本文叙述了硫素营养状况对蔬菜品质的显著作用。硫素供给不足,蔬菜将出现明显的缺硫症状。施用硫肥是降低植物对有毒元素砷或锑等吸收的有效措施,也是预防植物过量吸收重金属镉或锌等的有效手段。施硫可增加蔬菜必需氨基酸含量,特别是含硫的蛋氨酸等,从而提高了其营养价值。施硫还可提高蔬菜对病虫害的抵抗能力。

关键词：蔬菜硫素营养品质

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硫对苗期水稻根表胶膜形成的影响(英文)

中国科学院大学学报（中英文） 2013年第4期30卷 485-496,576页

作者：吴丛杨慧胡正义 S.Haneklaus 樊建凌章钢娅徐柏森夏旭卢佳 e.schnug 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室南京210008 中国科学院大学资源与环境学院北京100049 联邦栽培植物研究中心(JKI)作物与土壤科学研究所南京林业大学电镜实验室南京210032

通过土-砂根际盒培养试验研究了施硫(0,30 ***-1,SO2-4-S)对水稻苗期根表胶膜形成的影响.结果表明,施硫显著提高ACA(乙酸钠-柠檬酸钠-抗坏血酸)浸提的24天和48天苗龄根表胶膜铁锰含量,即施硫促进水稻根表胶膜形成,但其对8天苗龄根表胶... 详细信息

通过土-砂根际盒培养试验研究了施硫(0,30 ***-1,SO2-4-S)对水稻苗期根表胶膜形成的影响.结果表明,施硫显著提高ACA(乙酸钠-柠檬酸钠-抗坏血酸)浸提的24天和48天苗龄根表胶膜铁锰含量,即施硫促进水稻根表胶膜形成,但其对8天苗龄根表胶膜影响不明显.SeM-eDX观察发现,施硫导致水稻根表有更多颗粒状聚集,尤其在根的基部.可见,硫可以通过调控水稻根表胶膜形成来影响根系对营养元素的吸收.

关键词：硫胶膜水稻 ACA SeM-eDX 根际

elemental Sulfur Oxidation by Thiobacillus spp. and Aerobic Heterotrophic Sulfur-Oxidizing Bacteria

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Pedosphere 2010年第1期20卷 71-79页

作者： YANG Zhi-gui K. STOVeN S. HANeKLAUS B. R. SINGH e. schnug Institute of environmental engineering School of Metallurgical Science and Engineering Central South University Changsha 410083 （China） Department of Plant and environmental Sciences Norwegian University of Life Sciences N-1432 Aas （Norway） Institute for Crop and Soil Science Federal Research Center for Cultivated Plants Bundesallee 50 D-38116 Braunschweig （Germany）

The prediction of the oxidation rate of elemental sulfur （S^0） is a critical step in sulfur （S） fertilizer strategy to supply plant-available sulfur. An incubation experiment was conducted to determine the rate and amount of S^0 oxidation in relation to the contribution of Thiobacillus spp. and aerobic heterotrophic S-oxidizing bacteria. After 84 days, 16.3% and 22.4% of the total S^0 applied to the soil were oxidized at 20 and 30 ℃, respectively. The oxidation of So proved to be a two-step process with a rapid oxidation during the first 28 days and a slow oxidation from then on. The highest oxidation rate of 12.8 μg S cm ^-2 d^-1 was measured during the first two weeks at 30 ℃. At 20 ℃ the highest oxidation rate of 10.2 μg S cm^-2 d^-1 was obtained from two to four weeks after start of the experiment. On an average the soil pH declined by 3.6 and 4.0 units after two weeks of experiment. At the same time the electric conductivity increased nine times. With the oxidation of S^0 the population of Thiobacillus spp. and aerobic heterotrophic S-oxidizing bacteria increased. The corresponding values for Thiobacillus spp. and aerobic heterotrophic S-oxidizing bacteria increased from 2.9 × 10^5 and 1.4 × 10^5 g^-1 soil at the start of the experiment to 4 × 10^8 and 5.6 × 10^8 g^-1 soil 14 days after S^0 application, respectively. No Thiobacillus spp. was present eight weeks after S^0 application. The results suggested that oxidation of residual S^0 completely relied oll aerobic heterotrophic S-oxidizing bacteria.

关键词： electric conductivity S^0-oxidation rate soil pH sulfate

enhancing perianal disease management with integrated physical and psychological approaches

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World Journal of Clinical Cases 2025年第2期13卷 59-63页

作者： Uchenna e Okpete Haewon Byeon Department of Digital Anti-aging Healthcare(BK21) Inje UniversityGimhae 50834South Korea

This article provides a comprehensive analysis of the study by Hou et al,focusing on the complex interplay between psychological and physical factors in the postoperative recovery(POR)of patients with perianal *** study sheds light on how illness perception,anxiety,and depression significantly influence recovery *** et al developed a predictive model that demonstrated high accuracy in identifying patients at risk of poor *** article explores the critical role of pre-operative psychological assessment,highlighting the need for mental health support and personalized recovery plans in enhancing POR quality.A multidisciplinary approach,integrating mental health professionals with surgeons,anesthesiologists,and other specialists,is emphasized to ensure comprehensive care for *** study’s findings serve as a call to integrate psychological care into surgical practice to optimize outcomes for patients with perianal diseases.

关键词： Perianal disease Post-operative recovery Anxiety Depression Pain management emotional well-being Multidisciplinary approach

Brain-derived neurotrophic factor alterations and cognitive decline in schizophrenia:Implications for early intervention

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World Journal of Psychiatry 2025年第1期15卷 189-193页

作者： Uchenna e Okpete Haewon Byeon Department of Digital Anti-aging Healthcare(BK21) Inje UniversityGimhae 50834South Korea

This manuscript explores the recent study by Cui et al which assessed the interplay between inflammatory cytokines and brain-derived neurotrophic factor(BDNF)levels in first-episode schizophrenia *** study revealed that higher levels of interleukin-6 and tumor necrosis factor-αcorrelated with reduced BDNF levels and poorer cognitive *** is a severe psy-chiatric disorder impacting approximately 1%of the global population,charac-terized by positive symptoms(hallucinations and delusions),negative symptoms(diminished motivation and cognitive impairments)and disorganized thoughts and *** research highlights the role of BDNF as a potential biomarker for early diagnosis and therapeutic *** findings from Cui et al’s study suggest that targeting neuroinflammation and enhancing BDNF levels may improve cognitive *** treatment approaches involve a com-bination of pharmacological and non-pharmacological interventions tailored to individual patient ***,monitoring cognitive and neuroinflammatory markers is essential for improving patient outcomes and quality of ***-quently,this manuscript highlights the need for an integrated approach to schizo-phrenia management,considering both clinical symptoms and underlying neuro-biological changes.

关键词： Schizophrenia Cognitive impairment Neuroinflammatory markers Brain-derived neurotrophic factor Interleukin Personalized treatment

NeCAB family of neuronal calcium-binding proteins in health and disease

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Neural Regeneration Research 2025年第5期20卷 1236-1243页

作者： Diones Bueno Michael K.e.Schafer Sudena Wang Michael J.Schmeisser Axel Methner Institute for Molecular Medicine University Medical Center of the Johannes Gutenberg-UniversityMainzGermany Department of Anesthesiology University Medical Center of the Johannes Gutenberg-UniversityMainzGermany Institute of Anatomy University Medical Center of the Johannes Gutenberg-UniversityMainzGermany

The N-terminal eF-hand calcium-binding proteins 1–3(NeCAB1–3) constitute a family of predominantly neuronal proteins characterized by the presence of at least one eF-hand calcium-binding domain and a functionally less well characterized C-terminal antibiotic biosynthesis monooxygenase domain. All three family members were initially discovered due to their interactions with other proteins. NeCAB1 associates with synaptotagmin-1, a critical neuronal protein involved in membrane trafficking and synaptic vesicle exocytosis. NeCAB2 interacts with predominantly striatal G-protein-coupled receptors, while NeCAB3 partners with amyloid-β A4 precursor protein-binding family A members 2 and 3, key regulators of amyloid-β production. This demonstrates the capacity of the family for interactions with various classes of proteins. NeCAB proteins exhibit distinct subcellular localizations: NeCAB1 is found in the nucleus and cytosol, NeCAB2 resides in endosomes and the plasma membrane, and NeCAB3 is present in the endoplasmic reticulum and Golgi apparatus. The antibiotic biosynthesis monooxygenase domain, an evolutionarily ancient component, is akin to atypical heme oxygenases in prokaryotes but is not wellcharacterized in vertebrates. Prokaryotic antibiotic biosynthesis monooxygenase domains typically form dimers, suggesting that calcium-mediated conformational changes in NeCAB proteins may induce antibiotic biosynthesis monooxygenase domain dimerization, potentially activating some enzymatic properties. However, the substrate for this enzymatic activity remains uncertain. Alternatively, calcium-mediated conformational changes might influence protein interactions or the subcellular localization of NeCAB proteins by controlling the availability of protein–protein interaction domains situated between the eF hands and the antibiotic biosynthesis monooxygenase domain. This review summarizes what is known about genomic organization, tissue expression, intracellular localization, interac

关键词： calcium eF hand mitochondria nervous system signal transduction

Free vibration and transient response of double curved beams connected by intermediate straight beams

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Applied Mathematics and Mechanics(english edition) 2025年第1期46卷 37-62页

作者： R.A.JAFARI-TALOOKOLAeI H.GHANDVAR e.JUMAeV S.KHATIR T.CUONG-Le School of Mechanical engineering Babol Noshirvani University of Technology Department of Mechanical engineering Faculty of Engineering New Uzbekistan University University of Business and Science Center for engineering Application and Technology Solutions Ho Chi Minh City Open University

This paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FGP) materials. The strain potential and kinetic energies of each beam along with the work done by the external force are calculated. Additionally, a higher-order beam element is introduced to derive stiffness and mass matrices, along with the force vector. The curved and straight beams are discretized, and their assembled stiffness, mass matrices, and force vectors, are *** conditions at the joints are used to derive the total matrices of the entire structure. Subsequently, the natural frequencies and transient response of the system are determined. The accuracy of the mathematical model and the self-developed computer program is validated through the comparison of the obtained results with those of the existing literature and commercial software ANSYS, demonstrating excellent ***, a comprehensive study is conducted to investigate the effects of various parameters on the free vibration and transient response of the considered structure.

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