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Research progress and prospects of complete ammonia oxidizing bacteria in wastewater treatment

《环境科学与工程前沿(英文)》 2022年 第16卷 第9期 doi: 10.1007/s11783-022-1555-2

摘要:

• Comammox bacteria have unique physiological characteristics.

关键词: Complete ammonia oxidizing (comammox) bacteria     Nitrogen cycle     Physiological characteristics     Wastewater treatment    

Characteristics of plankton Hg bioaccumulations based on a global data set and the implications for aquatic

《环境科学与工程前沿(英文)》 2022年 第16卷 第3期 doi: 10.1007/s11783-021-1471-x

摘要:

• Hg bioaccumulation by phytoplankton varies among aquatic ecosystems.

关键词: Plankton     Hg bioaccumulation     Physiological characteristics     A cross-system analysis     Nutrient compositions     Global data set    

CLA的生理活性和应用前景

张根旺,郭诤,杨天奎

《中国工程科学》 2001年 第3卷 第7期   页码 85-89

摘要:

CLA是20世纪80年代末才被发现具有许多重要生理活性的天然脂肪酸,文章讨论了CLA的涵义界定、天然存在、重要的生理活性及其应用前景。

关键词: CLA     生理活性     应用前景    

Chromium phytoextraction and physiological responses of the hyperaccumulator Swartz to plant growth-promoting

《环境科学与工程前沿(英文)》 2023年 第17卷 第1期 doi: 10.1007/s11783-023-1609-0

摘要:

● Improved Cr phytoextration efficiency was achieved by B. cereus inoculation.

关键词: Hexavalent chromium     Hyperaccumulator     Rhizobacteria     Leersia hexandra Swartz     Bacillus cereus     Consortia    

Physiological effects of weightlessness: countermeasure system development for a long-term Chinese manned

Linjie Wang, Zhili Li, Cheng Tan, Shujuan Liu, Jianfeng Zhang, Siyang He, Peng Zou, Weibo Liu, Yinghui Li

《医学前沿(英文)》 2019年 第13卷 第2期   页码 202-212 doi: 10.1007/s11684-017-0587-7

摘要: The Chinese space station will be built around 2020. As a national space laboratory, it will offer unique opportunities for studying the physiological effects of weightlessness and the efficacy of the countermeasures against such effects. In this paper, we described the development of countermeasure systems in the Chinese space program. To emphasize the need of the Chinese space program to implement its own program for developing countermeasures, we reviewed the literature on the negative physiological effects of weightlessness, the challenges of completing missions, the development of countermeasure devices, the establishment of countermeasure programs, and the efficacy of the countermeasure techniques in American and Russian manned spaceflights. In addition, a brief overview was provided on the Chinese research and development on countermeasures to discuss the current status and goals of the development of countermeasures against physiological problems associated with weightlessness.

关键词: countermeasure     physiological effects of weightlessness     effect evaluation     long-term manned spaceflight    

Imaging technologies for plant high-throughput phenotyping: a review

Yong ZHANG, Naiqian ZHANG

《农业科学与工程前沿(英文)》 2018年 第5卷 第4期   页码 406-419 doi: 10.15302/J-FASE-2018242

摘要:

Phenomics studies a variety of phenotypic plant traits and is the key to understanding genetic functions and environmental effects on plants. With the rapid development of genomics, many plant phenotyping platforms have been developed to study complex traits related to the growth, yield, and adaptation to biotic or abiotic stress, but the ability to acquire high-throughput phenotypic data has become the bottleneck in the study of plant genomics. In recent years, researchers around the world have conducted extensive experiments and research on high-throughput, image-based phenotyping techniques, including visible light imaging, fluorescence imaging, thermal imaging, spectral imaging, stereo imaging, and tomographic imaging. This paper considers imaging technologies developed in recent years for high-throughput phenotyping, reviews applications of these technologies in detecting and measuring plant morphological, physiological, and pathological traits, and compares their advantages and limitations.

关键词: high-throughput phenotyping     imaging technology     morphological traits     pathological traits     physiological traits    

Translocation and biotoxicity of metal (oxide) nanoparticles in the wetland-plant system

《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1432-4

摘要:

• Aquatic plants are more likely to absorb TiO2 NPs that are beneficial to them.

关键词: Constructed wetlands     Aquatic plants     Nanoparticles     Physiological activity     Biomass    

Physiological functions and clinical implications of the N-end rule pathway

null

《医学前沿(英文)》 2016年 第10卷 第3期   页码 258-270 doi: 10.1007/s11684-016-0458-7

摘要:

The N-end rule pathway is a unique branch of the ubiquitin-proteasome system in which the determination of a protein’s half-life is dependent on its N-terminal residue. The N-terminal residue serves as the degradation signal of a protein and thus called N-degron. N-degron can be recognized and modifed by several steps of post-translational modifications, such as oxidation, deamination, arginylation or acetylation, it then polyubiquitinated by the N-recognin for degradation. The molecular basis of the N-end rule pathway has been elucidated and its physiological functions have been revealed in the past 30 years. This pathway is involved in several biological aspects, including transcription, differentiation, chromosomal segregation, genome stability, apoptosis, mitochondrial quality control, cardiovascular development, neurogenesis, carcinogenesis, and spermatogenesis. Disturbance of this pathway often causes the failure of these processes, resulting in some human diseases. This review summarized the physiological functions of the N-end rule pathway, introduced the related biological processes and diseases, with an emphasis on the inner link between this pathway and certain symptoms.

关键词: N-end rule pathway     Ate1     cardiovascular development     neurogenesis     spermatogenesis     neurodegenerative disorders     Johanson–Blizzard syndrome    

Recent progress in hydrodynamic characteristics research and application of annular centrifugal extractors

《化学科学与工程前沿(英文)》 2022年 第16卷 第6期   页码 854-873 doi: 10.1007/s11705-022-2156-0

摘要: The annular centrifugal extractor (ACE) integrates mixing and separation. It has been widely used in many industrial fields because of its low residence time, compact structure, and high mass transfer efficiency. Most of the literature has focused on flow instabilities, flow visualization, and computational fluid dynamics simulations. More recently, research on hydrodynamic behavior and structural optimization has received widespread attention. With the development of ACE technology, applications have been broadened into several new areas. Hence, this paper reviews research progress regarding ACE in terms of hydrodynamic characteristics and the structural improvements. The latest applications covering hydrometallurgy, nuclear fuel reprocessing, bio-extraction, catalytic reaction, and wastewater treatment are presented. We also evaluate future work in droplet breakup and coalescence mechanisms, structural improvements specific to different process requirements, scaling-up methods, and stability and reliability after scaling-up.

关键词: annular centrifugal extractor     hydrodynamic characteristics     structure optimization     the latest application    

Clinical characteristics and outcomes of biopsy-proven diabetic nephropathy

null

《医学前沿(英文)》 2017年 第11卷 第3期   页码 386-392 doi: 10.1007/s11684-017-0574-z

摘要:

Kidney damage is common in patients with diabetes mellitus (DM). However, whether the type of kidney damage can be reliably diagnosed using clinical data alone remains unclear. Predictive factors for diabetic nephropathy (DN) outcomes are also poorly understood. In this study, the clinical manifestations of 111 cases of biopsy-proven DN were described, and the clinical and pathological parameters of patients with different DN outcomes were compared. Results showed that long DM duration (>10 years in 32.4% of patients), severe proteinuria (62.2%), and renal dysfunction (estimated glomerular filtration rate [eGFR]<60 mL/(min·1.73 m2)) (52.3%) did not accurately indicate whether the condition of these patients progressed to DN. Hematuria (48.6%) failed to specify either DN or nondiabetic renal disease. Diabetic retinopathy (78.4%) was a crucial complication in patients with DN. Kaplan–Meier analysis revealed that the renal survival of 53 patients who were diagnosed with DN and were followed up was not significantly associated with glomerular classification (P>0.05). Cox’s regression analysis demonstrated that renal survival time was significantly influenced by sex (b= 1.394, P= 0.038), hematuria (b= 0.036, P= 0.029), and eGFR (b= −0.039, P= 0.002) but was not significantly affected by age, 24 h urinary protein excretion, or glomerular classification (P>0.05). In conclusion, the clinical characteristics of DN vary, and renal biopsy is necessary to determine renal damage patterns. Sex, hematuria, and the eGFR may affect DN outcomes, whereas the glomerular classification may not.

关键词: diabetic nephropathy     clinical characteristics     renal biopsy     outcomes    

Obesity in China: its characteristics, diagnostic criteria, and implications

null

《医学前沿(英文)》 2015年 第9卷 第2期   页码 129-133 doi: 10.1007/s11684-015-0387-x

基于一种全新的优化多变量非等距模型对中国汉族成人左心室多普勒超声心动图测值生理性变异的校正方法 Article

姚桂华, 陈湘云, 杨文静, 张青, 刘静, 梁欢, 孙慧, 许耀, 王丽, 徐金锋, 张澄, 孙丰荣, 张梅, 曾雪迎, 张运

《工程(英文)》 2022年 第16卷 第9期   页码 115-122 doi: 10.1016/j.eng.2021.05.007

摘要:

多数左心室(LV)多普勒超声心动图参数测值随年龄和性别显著变化,因此有必要对其生理性差异进行校正。本研究旨在验证:不同的多普勒参数测值与生物学特征变量间呈异速非线性相关,且其校正常数与校正指数各不同。共测量了1224名健康成人的23个LV多普勒参数。随机选择70%数据(A组)建立优化多变量非线性模型(OMAM),在30%数据(B组)和183名超重人群数据(C组)中验证OMAM的可靠性,并与基于体表面积(BSA)的单变量等距模型(SVIM)进行比较。结果显示,校正前,23个LV多普勒参数均与一个或多个生物学特征变量显著相关,B组中47.8% (11/23)的参数存在性别间差异,经OMAM校正后,81.8% (9/11)的参数消除了性别间差异。OMAM对B组和C组数据的校正成功率分别为100% (23/23)和82.6% (19/23),建立了独立于生物学特征变量的多普勒参数的OMAM参考值,而基于BSA的SVIM校正成功率为零。不同的LV多普勒参数与一个或多个生物学特征变量呈异速非线性相关;本研究建立的OMAM成功校正了因生物学特征变量差异对健康和超重人群多普勒测值的生理性影响,其校正效果显著优于传统的SVIM。然而,OMAM针对其他种族、肥胖和疾病状态人群的适用性仍需进一步探究

关键词: 多普勒超声心动图     生理性变异     非等距模型     正常参考值    

Obesity-related glomerulopathy: pathogenesis, pathologic, clinical characteristics and treatment

null

《医学前沿(英文)》 2017年 第11卷 第3期   页码 340-348 doi: 10.1007/s11684-017-0570-3

摘要:

In light of the rapid increase in the number of obesity incidences worldwide, obesity has become an independent risk factor for chronic kidney disease. Obesity-related glomerulopathy (ORG) is characterized by glomerulomegaly in the presence or absence of focal and segmental glomerulosclerosis lesions. IgM and complement 3 (C3) nonspecifically deposit in lesions without immune-complex-type deposits during ORG immunofluorescence. ORG-associated glomerulomegaly and focal and segmental glomerulosclerosis can superimpose on other renal pathologies. The mechanisms under ORG are complex, especially hemodynamic changes, inflammation, oxidative stress, apoptosis, and reduced functioning nephrons. These mechanisms synergize with obesity to induce end-stage renal disease. A slow increase of subnephrotic proteinuria (<3.5 g/d) is the most common clinical manifestation of ORG. Several treatment methods for ORG have been developed. Of these methods, renin–angiotensin–aldosterone system blockade and weight loss are proven effective. Targeting mitochondria may offer a novel strategy for ORG therapy. Nevertheless, more research is needed to further understand ORG.

关键词: obesity-related glomerulopathy     pathogenesis     pathologic     clinical characteristics    

Dynamic characteristics of molten droplets and hot particles falling in liquid pool

Liangxing LI, Weimin MA, Huixiong LI, Tingkuan CHEN,

《能源前沿(英文)》 2010年 第4卷 第2期   页码 246-251 doi: 10.1007/s11708-009-0077-y

摘要: The dynamic characteristics of molten droplets and hot particles at the very beginning of their fall into coolant pools are presented. The falling course of a single droplet or a single hot particle was recorded by a high-speed camera and a curve of velocity . time was obtained. Emphasis was placed on the effects of the droplet’s size and temperature, the coolant’s temperature and properties, and the droplet’s physical properties on the moving behavior. The results for the all cases showed that the velocity of a falling droplet/particle decreased rapidly but rebounded shortly, at the beginning of droplet/particle falling in the coolant. Following such a V-shaped evolution in velocity, the droplet/particle slows down gradually to a comparatively steady velocity. An increase in either coolant temperature or droplet temperature results in a larger velocity variation in the “J-region”, but a smaller deceleration when it moves out of the “J-region”. The elevated volatility of a coolant leads to a steeper deceleration in the “J-region” and beyond. The bigger size of a particle leads to a greater velocity variation in the “J-region” and terminal velocity. A high melting point and thermal conductivity as well as lower heat capacity contribute to dramatic variation in the “J-region” and low terminal velocity.

关键词: dynamic characteristics     molten droplets     high-temperature particles     fuel and coolant interactions    

Combustion characteristics and kinetics of bio-oil

Ruixia ZHANG, Zhaoping ZHONG, Yaji HUANG

《化学科学与工程前沿(英文)》 2009年 第3卷 第2期   页码 119-124 doi: 10.1007/s11705-009-0068-x

摘要: The combustion characteristics of bio-oils derived from rice husk and corn were studied by thermogravimetry analysis. According to the thermogravimetry (TG), differential thermogravimetry (DTG) and differential thermal analysis (DTA) curves of bio-oils in air and nitrogen atmosphere, we analyzed the combustion characteristics of different kinds of bio-oils in different atmospheres and worked out the combustion kinetics parameters of the bio-oil, providing reliable base data for the burning of bio-oil. The thermogravimetry indicated that the combustion process of bio-oil was divided into three stages. At the same time, the combustion process can be described by different order reaction models, and with the method of Coats-Redfern, the activation energy and frequency factor of different kinds of bio-oils were obtained.

关键词: bio-oil     combustion characteristics     combustion kinetics    

标题 作者 时间 类型 操作

Research progress and prospects of complete ammonia oxidizing bacteria in wastewater treatment

期刊论文

Characteristics of plankton Hg bioaccumulations based on a global data set and the implications for aquatic

期刊论文

CLA的生理活性和应用前景

张根旺,郭诤,杨天奎

期刊论文

Chromium phytoextraction and physiological responses of the hyperaccumulator Swartz to plant growth-promoting

期刊论文

Physiological effects of weightlessness: countermeasure system development for a long-term Chinese manned

Linjie Wang, Zhili Li, Cheng Tan, Shujuan Liu, Jianfeng Zhang, Siyang He, Peng Zou, Weibo Liu, Yinghui Li

期刊论文

Imaging technologies for plant high-throughput phenotyping: a review

Yong ZHANG, Naiqian ZHANG

期刊论文

Translocation and biotoxicity of metal (oxide) nanoparticles in the wetland-plant system

期刊论文

Physiological functions and clinical implications of the N-end rule pathway

null

期刊论文

Recent progress in hydrodynamic characteristics research and application of annular centrifugal extractors

期刊论文

Clinical characteristics and outcomes of biopsy-proven diabetic nephropathy

null

期刊论文

Obesity in China: its characteristics, diagnostic criteria, and implications

null

期刊论文

基于一种全新的优化多变量非等距模型对中国汉族成人左心室多普勒超声心动图测值生理性变异的校正方法

姚桂华, 陈湘云, 杨文静, 张青, 刘静, 梁欢, 孙慧, 许耀, 王丽, 徐金锋, 张澄, 孙丰荣, 张梅, 曾雪迎, 张运

期刊论文

Obesity-related glomerulopathy: pathogenesis, pathologic, clinical characteristics and treatment

null

期刊论文

Dynamic characteristics of molten droplets and hot particles falling in liquid pool

Liangxing LI, Weimin MA, Huixiong LI, Tingkuan CHEN,

期刊论文

Combustion characteristics and kinetics of bio-oil

Ruixia ZHANG, Zhaoping ZHONG, Yaji HUANG

期刊论文