|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 橡胶集料水泥砂浆和混凝土的性能研究显示文摘废轮胎颗粒掺加到水泥砂浆和混凝土中会明显降低材料强度,大大限制其应用。针对该问题,应用多种方法来改进橡胶混凝土的力学性能,例如降低W/C、掺加硅灰、偶联剂预处理橡胶颗粒等。研究结果表明,降低W/C能够明显提高橡胶混凝土的强度,橡胶颗粒表面用PVA和硅烷偶联剂处理能够显著增加抗压强度,如果多种方法联合使用效果更好。此外,橡胶改性混凝土的强度虽然有所降低,但其韧性和抗疲劳特性却显著增加。应用SEM分析了橡胶混凝土的微观结构,结果同样证实偶联剂处理橡胶颗粒表面能够提高水泥基体与橡胶颗粒的界面粘结强度。 | 李悦 Yunping Xi | 2006 | 混凝土2006,,6: | 33 |
| 2 | Suspended sediment load in the turbidity maximum zone at the Yangtze River Estuary: The trends and causes显示文摘在河口,人的活动的影响和河口规定基于推迟的沉积元素的分析混浊最大值地区上的工程根据在 1959 和 2011 之间的测量数据被学习。当在流量的沉积体积和集中的锋利的减少在河口导致了混浊最大值地区的锋利的减少时,人的活动在朝海的方向水上有小效果,这被发现当在流量的沉积体积和集中的锋利的减少在河口导致了混浊最大值地区的锋利的减少时。集中在外面,海和 Hangzhou 海湾没变化,并且那也有点沿着 Subei 海岸减少,它没在混浊最大值地区上有影响。与在 1959 和 1999 之间的集中相比,在河口在上游的移动的集中的山峰,和在 20002009 的集中沿着河与一个更狭窄的变化范围在大约 24.73% 减少了到海。在诺思经过的推迟的沉积集中是低的在因为朝海的方向沉积的减少在上游、下游、床材料变粗,当它由于沉积的影响在中间相对高时,穿过北方突堤。 | YANG Yunping LI Yitian SUN Zhaohua FAN Yongyang | 2014 | Journal of Geographical Sciences2014,24,1: | 25 |
| 3 | A Highly Pathogenic Strain of Porcine Deltacoronavirus Caused Watery Diarrhea in Newborn Piglets显示文摘Porcine deltacoronavirus(PDCoV) is a newly identified virus that causes watery diarrhea in newborn piglets and results in significant economic losses to the pig industry. Since first reported in Hong Kong in 2012, PDCoV has been subsequently detected in USA, South Korea, Thailand, and China's Mainland. Here we isolated a strain of PDCoV, named CHN-GD-2016,from the intestinal content of a diseased newborn piglet with severe diarrhea in a pig farm in Guangdong, China. PDCoV CHN-GD-2016 could be identified by immunofluorescence with PDCoV specific rabbit antisera, and typical crown-shaped particles with spiky surface projections of this PDCoV were observed with electron microscopy. Genomic analysis showed that the PDCoV CHN-GD-2016 was closely related to other Chinese PDCoV strains, with the highest sequence similarity with the strain CHN/Tianjin/2016. Importantly, inoculation of newborn piglets with 1×10~5 TCID_(50) of CHN-GD-2016 by oral feeding successfully reproduced clear clinical symptoms, including vomiting, dehydration, and severe diarrhea in piglets. In addition, the virus RNA in rectal swabs from 1 to 7 days post inoculation was detected, macroscopic and microscopic lesions in small intestine were observed, and viral antigen was also detected in the small intestines with immunohistochemical staining. Collectively, the data show in this study confirms that PDCoV is present in Guangdong,China and is highly pathogenic in newborn piglets. | Zhichao Xu Huiling Zhong Qingfeng Zhou Yunping Du Li Chen Yun Zhang Chunyi Xue Yongchang Cao | 2018 | Virologica Sinica2018,33,2: | 16 |
| 4 | Characterization and source analysis of indoor/outdoor culturable airborne bacteria in a municipal wastewater treatment plant显示文摘The potential health risks of airborne bacteria emission from a wastewater treatment process have been concerned. However, few studies have investigated the differences in community structure between indoor and outdoor bacteria. In this work, the characterization of airborne bacteria was studied in a municipal wastewater treatment plant in Beijing, China. Two indoor(i.e., fine screen room and sludge dewatering house) and two outdoor(i.e., aeration tank and control site) sampling sites were selected. An Andersen six-stage impactor was used for collecting culturable airborne bacteria in the air, and Illumina MiSeq sequencing was conducted to track the emission source of the culturable airborne bacteria. The results indicate that, compared with the outdoor aeration tank site, the concentrations of culturable airborne bacteria in the indoor fine screen room with poor ventilation were more than ten times higher and the particle size was about twice as large. The community structures of indoor and outdoor culturable airborne bacteria were obviously different. Enterobacteriaceae and opportunistic pathogens were detected in indoor culturable airborne bacteria, with wastewater and sludge dewatering machine identified as the primary sources. Conversely,Enterobacteriaceae and opportunistic pathogens were not detected in outdoor culturable airborne bacteria. Outdoor high wind speed might have resulted in rapid dilution and mixing of culturable airborne bacteria generated from the aeration tank with the ambient air. The results of the present research suggest that covering pollution sources, increasing ventilation rates, and using protective measures for personnel should be implemented to decrease the exposure risk to indoor culturable airborne bacteria. | Guangsu Xu Yunping Han Lin Li Junxin Liu | 2018 | Journal of Environmental Sciences2018,30,12: | 12 |
| 5 | Characterization of the airborne bacteria community at different distances from the rotating brushes in a wastewater treatment plant by 16S rRNA gene clone libraries显示文摘Biological risks of bioaerosols emitted from wastewater treatment processes have attracted wide attention in the recent years. However, the culture-based analysis method has been mostly adopted for detecting the bacterial community in bioaerosols, which may result in the underestimation of total microorganism concentration as not all microorganisms are cultivable. In this study, oligonucleotide fingerprinting of 16S rRNA genes was applied to reveal the composition and structure of the bacterial community in bioaerosols from an Orbal oxidation ditch in a Beijing wastewater treatment plant (WWTP). Bioaerosols were collected at different distances from the aerosol source, rotating brushes, and the sampling height was 1.5 m which is the common respiratory height of a human being. The bacterial communities of bioaerosols were diverse, and the lowest bacterial diversity was found at the sampling site just after the rotating brush rotating brush. A large proportion of bacteria in bioaerosols were affiliated with Proteobacteria and Bacteroidetes. Numerous bacteria present in the bioaerosols also emerged in water, indicating that the bacterial community in the bioaerosols was related to that of the aerosols' sources. The forced aeration of rotating brushes brought about observably distinct bacterial communities between sampling sites situated before and after the rotating brush. Isolation sources of closest relatives in bioaerosols clone libraries were associated with the aqueous environment in the WWTP. Common potential pathogens in bioaerosols as well as those not reported in previous research were also analyzed in this study. Measures should be adopted to reduce the emission of bioaerosols and prevent their exposure to workers. | Yunping Han Lin Li Junxin Liu | 2013 | Journal of Environmental Sciences2013,25,1: | 12 |
| 6 | Randomized controlled multicenter clinical trial for integrated treatment of community-acquired pneumonia based on Traditional Chinese Medicine syndrome differentiation显示文摘OBJECTIVE:To evaluate the efficacy and safety of treatment based on syndrome differentiation ofTraditional Chinese Medicine(TCM) for community-acquired pneumonia(CAP).METHODS:A total of 240 CAP patients were randomly divided into the following two groups:thecontrol group was treated by anti-infection plus conventional medicine treatment;and the trial group was treated by TCM plus the above-mentioned treatment given to the controls.The course of treatment was 14 days,and the patients were followed up for 7 days.RESULTS:Of the 240 patients,235 accomplished the whole process of treatment.The five patients who withdrew from the study were brought into an intent-to-treat analysis.The therapeutic effects of the trial group were superior to those of the control group(P<0.01).The trial group took less time to become clinically stable,with a higher score in the quality of life(P<0.01).There were no significant differences in mortality rate(P>0.05),white blood cell count(P>0.05),bacterial clearance rate(P>0.05),and adverse reactions between the two integrated groups.CONCLUSION:Treatment based on TCM syndrome differentiation for CAP has the advantages of resulting in less time to achieve a stable clinical condition,improvement of clinical symptoms and quality of life,and is comparatively safe. | Jiansheng Li Xueqing Yu Suyun Li Haifeng Wang Yunping Bai Minghang Wang Zikai Sun Wei Zhang Zhaoshan Zhou Xianhua Jia Qingwei Zhou | 2012 | Journal of Traditional Chinese Medicine2012,32,4: | 11 |
| 7 | Berbamine suppresses cell proliferation and promotes apoptosis in ovarian cancer partially via the inhibition of Wnt/β-catenin signaling显示文摘 | Heng Zhang Yunping Jiao Chunyang Shi Xiao Song Ying Chang Yong Ren Xiaolin Shi | 2018 | Acta Biochimica et Biophysica Sinica2018,50,6: | 9 |
| 8 | The mechanism of barrier river reaches in the middle and lower Yangtze River显示文摘在它人工地或自然地被扰乱以后,冲积隧道总是以沉积运输的平衡国家调整了自己。怎么维持沉积运输的平衡国家并且使河政体稳定总是是河的 geomorphologists 的担心。在长江的中间、更低的活动范围的隧道被区分的河和单个线的河的蹒跚的分发描绘。河政体的变化比在单个线的河里在区分的河里猛烈地是更多。区分的河里的河政体的调整是否能通过单个线的河并且宣传到下游的活动范围,影响全面的河政体的稳定性。研究证明障碍河活动范围能阻止宣传到下游的活动范围接近在上游的隧道调整;因此,它在稳定河政体起一个关键作用。这研究在长江的中间、更低的活动范围调查 34 个单个线的河活动范围。根据长江的中间、更低的活动范围的河的进程的系统的摘要,障碍河活动范围的控制因素被总结并且提取:平面形态学单个线、蜿蜒地流;没有流动偏斜,节点在河活动范围的上面或中间的部分散布了;水力的几何系数是不到 4;纵的坡度比 12 大,凹面河岸的泥土内容比 9.5% 大,并且床沉积的中部的直径比 0.158 公里大。从海军司烧方程,流动的弯曲半径的计算公式动态轴被推出,然后这些的角色在限制流动的迁居上控制因素动态轴和障碍河活动范围的形成被分析。当时,障碍河活动范围被看作这到隧道边界的限制力量的动态轴是的流动的迁居力量的比率不到 1 在不同流动层次下面。障碍河活动范围的机制是以便甚至当在上游的河政体调整时,这个活动范围的隧道边界能总是抑制流动的移植振幅动态轴并且在不同的在上游的河政体条件下面集中主要的流线的平面位置,提供相对稳定的到来的流动为下游的活动范围调节,从而阻止宣传到下游的活动范围接近在上游的河政体调整。 | YOU Xingying TANG Jinwu ZHANG Xiaofeng HOU Weiguo YANG Yunping SUN Zhaohua WENG Zhaohui | 2017 | Journal of Geographical Sciences2017,27,10: | 9 |
| 9 | Cloned pigs derived from somatic cell nuclear transferembryos cultured in vitro atlow oxygen tension显示文摘Pig cloning has great potential to human xenotransplantation. The present study was designed to establish a more efficient system for producing cloned pigs by somatic cell nuclear transfer (SCNT). Our approach was as follows: SCNT embryos were reconstructed by using fetal fibroblasts of Chinese miniature pig as donors and in vitro matured oocytes of prepubertal gilts as recipients. Reconstructed em- bryos were induced by electrical fusion/activation and cultured in BSA-containing North Carolina State University 23 medium (NCSU-23) or Porcine Zygote Medium (PZM-3) at the gas condition of 5% CO2, 7% O2, 88% N2. A total of 230 cloned embryos were transferred to three surrogate sows, producing three piglets. One of them is apparently healthy. The clonal provenance of the piglet was indicated by its coat color and confirmed by DNA microsatellite analysis. These results indicate that the use of in vitro matured oocytes from prepubertal gilts as recipient, combined with cloned embryos cultured at low oxygen tension is an effective way to produce cloned pigs. | PAN Dengke ZHANG Yunhai SUN Xiuzhu ZHANG Jian LI Xuyang LI Yan GU Zhiliang DA Yunping WU Changxin LI Ning | 2006 | Chinese Science Bulletin2006,51,7: | 8 |
| 10 | The synchronicity and difference in the change of suspended sediment concentration in the Yangtze River Estuary显示文摘从长江盆的沉积分泌物在最近的年里有一个逐步的减少趋势。扣押三座峡水库加重了这个减少的趋势并且通过传播效果在长江河口影响了推迟的沉积集中(SSC ) 的变化。长江河口的 SSC 数据在 19592012 期间显示出那:(1 ) 在南方的 SSC 在河口并且在长江分叉近海海区域显示了减少的趋势并且向海少些减少了。同时,在在 SSC 和沉积分泌物之间的减少的大小的差别向海变得更大。(2 ) 为北方布朗奇,优先的流动没很变化,但是 SSC 趋于减少,它被 SSC 的减少主要在南方布朗奇和中国东方海引起。( 3 )由于减少的流量和相对加强的潮,在在 20032012 的浅节移动了的酒吧中的 SSC 的山峰区域为在 19842002 与那相比联合起来的大约 1/6 经度里面,并且里面动人的距离在洪水季节的顺序>年度一般水准>旱季。(4 ) 在南方经过的入口,因为增加由暂停引起了,岸沟交换是, SSC 主要减少了不到减少在盆和海区域由锋利的 SSC 减少引起了。颠倒在中间的节是真的,在 SSC 显示出一个增加的趋势的地方。(5 ) 在北方经过的入口在减少的流动裂口和沉积裂口比率的联合影响下面,在盆和海区域和暂停的减少的数量的减少的 SSC, SSC 显示了一个减少的趋势。在中间的节,因为增加的数量由沉积引起了,温习塘是多于减少的数量由外部环境引起了,显著地, SSC 趋于增加。整体地,在沉积分泌物的锋利的减少在长江河口引起了同步 SSC 减少。但是在 SSC 从盆在沉积分泌物在对锋利的减少的 SSC 的反应显示了增加的趋势,显示的 synchronicity 和差别的地方,仍然有区域。 | YANG Yunping DENG Jinyun ZHANG Mingjin LI Yitian LIU Wanli | 2015 | Journal of Geographical Sciences2015,25,4: | 8 |
| 11 | Sulfur dioxide and o-xylene co-treatment in biofilter:Performance, bacterial populations and bioaerosols emissions显示文摘Sulfur dioxide(SO_2) and benzene homologs are frequently present in the off-gas during the process of sewage sludge drying. A laboratory scale biofilter was set up to co-treat SO_2 and o-xylene in the present study. SO_2 and o-xylene could be removed simultaneously in a single biofilter. Their concentration ratio in the inlet stream influenced the removal efficiencies. It is worth noting that the removal of SO_2 could be enhanced when low concentrations of o-xylene were introduced into the biofilter. Pseudomonas sp., Paenibacillus sp., and Bacillus sp. were the main functional bacteria groups in the biofilter. Sulfur-oxidizing bacteria(SOB) and o-xylene-degrading bacteria(XB) thrived in the biofilter and their counts as well as their growth rate increased with the increase in amount of SO_2 and o-xylene supplied. The microbial populations differed in counts and species due to the properties and components of the compounds being treated in the biofilter. The presence of mixed substrates enhanced the diversity of the microbial population. During the treatment process, bioaerosols including potentially pathogenic bacteria, e.g., Acinetobacter lwoffii and Aeromonas sp., were emitted from the biofilter. Further investigation is needed to focus on the potential hazards caused by the bioaerosols emitted from waste gas treatment bioreactors. | Yongli Sun Song Xue Lin Li Wenjie Ding Junxin Liu Yunping Han | 2018 | Journal of Environmental Sciences2018,30,7: | 7 |
| 12 | TGIF2 promotes the progression of lung adenocarcinoma by bridging EGFR/RAS/ERK signaling to cancer cell stemness显示文摘TGF-β-induced factor homeobox 2(TGIF2)is a transcription regulator that plays essential roles in the regulation of development and cell fate decisions.Aberrant expression of TGIF family proteins has been observed in several cancers,including ovarian,esophageal,and colorectal cancers.Here,we report that TGIF2 mediates the EGFR–RAS–ERK signaling pathway to enhance the stemness of lung adenocarcinoma(LUAD)cells and,therefore,promote the progression and metastasis of LUAD.We found that high TGIF2 expression was closely correlated with tumor growth,lymph node metastasis,and survival of patients with LUAD.Mice bearing TGIF2-silenced H1299 xenografts developed smaller tumors and fewer lung metastases.Importantly,silencing TGIF2 decreased the cancer stem cell(CSC)-like properties in A549 and H1299 cells.Furthermore,we identified that TGIF2 binding to the OCT4 promoter promotes its expression.In both LUAD cells and in vivo LUAD mouse models,we revealed that EGFR–RAS–ERK signaling phosphorylated TGIF2 and increased its stability,which was important for TGIF2-promoted LUAD stemness since phosphorylation-deficient TGIF2 mutants lost these functions.Thus,our study revealed that an important factor,TGIF2,bridges EGFR signaling to the CSC characteristics of LUAD cells,which can be utilized as an effective target for LUAD therapy. | Renle Du Wenzhi Shen Yi Liu Wenjuan Gao Wei Zhou Jun Li Shuangtao Zhao Chong Chen Yanan Chen Yanhua Liu Peiqing Sun Rong Xiang Yi Shi Yunping Luo | 2019 | Signal Transduction and Targeted Therapy2019,4,1: | 7 |
| 13 | A Novel Non-Symmetry and Anti-Packing Model for Image Representation显示文摘 | CHEN Chuanbo ZHENG Yunping Mudar Sarem | 2009 | Chinese Journal of Electronics2009,18,1: | 7 |
| 14 | The development in aqueous lithium-ion batteries显示文摘To meet the growing energy demands, it is urgent for us to construct grid-scale energy storage system than can connect sustainable energy resources. Aqueous Li-ion batteries(ALIBs) have been widely investigated to become the most promising stationary power sources for sustainable energy such as wind and solar power. It is believed that advantages of ALIBs will overcome the limitations of the traditional organic lithium battery in virtue of the safety and environmentally friendly aqueous electrolyte. In the past decades, plentiful works have been devoted to enhance the performance of different types of ALIBs.In this review, we discuss the development of cathode, anode and electrolyte for acquiring the desired electrochemical performance of ALIBs. Also, the main challenges and outlook in this field are briefly discussed. | Duan Bin Yunping Wen Yonggang Wan Yongyao Xia | 2018 | Journal of Energy Chemistry2018,27,6: | 7 |
| 15 | Overview of current targeted therapy in gallbladder cancer显示文摘Gallbladder cancer(GBC)is rare,but is the most malignant type of biliary tract tumor.Unfortunately,only a small population of cancer patients is acceptable for the surgical resection,the current effective regimen;thus,the high mortality rate has been static for decades.To substantially circumvent the stagnant scenario,a number of therapeutic approaches owing to the creation of advanced technologic measures(e.g.,next-generation sequencing,transcriptomics,proteomics)have been intensively innovated,which include targeted therapy,immunotherapy,and nanoparticle-based delivery systems.In the current review,we primarily focus on the targeted therapy capable of specifically inhibiting individual key molecules that govern aberrant signaling cascades in GBC.Global clinical trials of targeted therapy in GBC are updated and may offer great value for novel pathologic and therapeutic insights of this deadly disease,ultimately improving the efficacy of treatment. | Xiaoling Song Yunping Hu Yongsheng Li Rong Shao Fatao Liu Yingbin Liu | 2020 | Signal Transduction and Targeted Therapy2020,5,1: | 7 |
| 16 | Establishment of a transgenic mouse model with liver-specific expression of secretory immunoglobulin D显示文摘Mutation of mevalonate kinase(MVK) is thought to account for most cases of hyperimmunoglobulinemia D syndrome(HIDS) with recurrent fever.However,its mechanism and the relationship between elevated serum immunoglobulin D(IgD) and the clinical features of HIDS are unclear.In this study,we generated by fusion PCR a vector to express high levels of chimeric secretory IgD(csIgD) specifically in the liver.We then generated seven founder lines of transgenic mice by co-microinjection,and verified them using genomic PCR and Southern blotting.We detected the expression of csIgD by reverse transcription PCR,quantitative PCR,western blotting,and enzyme-linked immunosorbent assays.We demonstrated that csIgD could be specifically and stably expressed in the liver.We used flow cytometry to show that overexpression of csIgD in the bone marrow and spleen cells had no effect on B cell development.Morphologic and anatomical observation of the transgenic mice revealed skin damage,hepatosplenomegaly,and nephromegaly in some transgenic mice;in these mice,pathological sections showed high levels of cell necrosis and protein-like sediments in the liver,spleen,and kidney.We demonstrated that the genomic insertion sites of the transgenes did not disrupt the MVK gene on mouse chromosome 5.This transgenic mouse will be useful to explore the pathogenesis of HIDS. | WANG Ping WEI ZhiGuo YAN BoWen HUANG Tan GOU KeMian DAI YunPing ZHENG Min WANG MeiLi CHENG XueQian WANG XiFeng XU Chen SUN Yi | 2012 | Science China(Life Sciences)2012,55,3: | 6 |
| 17 | FAT1, a direct transcriptional target of E2F1, suppresses cell proliferation, migration and invasion in esophageal squamous cell carcinoma显示文摘Objective: Growing evidence indicates that FAT atypical cadherin 1(FAT1) has aberrant genetic alterations and exhibits potential tumor suppressive function in esophageal squamous cell carcinoma(ESCC). However, the role of FAT1 in ESCC tumorigenesis remains not well elucidated. The aim of this study was to further investigate genetic alterations and biological functions of FAT1, as well as to explore its transcriptional regulation and downstream targets in ESCC.Methods: The mutations of FAT1 in ESCC were achieved by analyzing a combined study from seven published genomic data, while the copy number variants of FAT1 were obtained from an analysis of our previous data as well as of The Cancer Genome Atlas(TCGA) and Cancer Cell Line Encyclopedia(CCLE) databases using the cBioPortal. The transcriptional regulation of FAT1 expression was investigated by chromatin immunoprecipitation(ChIP) and the luciferase reporter assays. In-cell western, Western blot and reverse transcription-quantitative polymerase chain reaction(RT-qPCR) were used to assess the indicated gene expression. In addition, colony formation and Transwell migration/invasion assays were employed to test cell proliferation, migration and invasion.Finally, RNA sequencing was used to study the transcriptomes.Results: FAT1 was frequently mutated in ESCC and was deleted in multiple cancers. Furthermore, the transcription factor E2 F1 occupied the promoter region of FAT1, and depletion of E2 F1 led to a decrease in transcription activity and mRNA levels of FAT1. Moreover, we found that knockdown of FAT1 promoted KYSE30 and KYSE150 cell proliferation, migration and invasion;while overexpression of FAT1 inhibited KYSE30 and KYSE410 cell proliferation, migration and invasion. In addition, knockdown of FAT1 led to enrichment of the mitogen-activated protein kinase(MAPK) signaling pathway and cell adhesion process.Conclusions: Our data provided evidence for the tumor suppressive function of FAT1 in ESCC cells and elucidated the transcriptional regulation of FAT1 by E2 F1, which may facilitate the understanding of molecular mechanisms of the progression of ESCC. | Yu Wang Guangchao Wang Yunping Ma Jinglei Teng Yan Wang Yongping Cui Yan Dong Shujuan Shao Qimin Zhan Xuefeng Liu | 2019 | Chinese Journal of Cancer Research2019,31,4: | 6 |
| 18 | A fast algorithm for computing moments of gray images based on NAM and extended shading approach显示文摘 | Yunping Zheng (1) zhengyp@scut.edu.cn Mudar Sarem (2) | 2011 | Frontiers of Computer Science2011,5,1: | 6 |
| 19 | Effects of tetrakis (hydroxymethyl) phosphonium sulfate pretreatment on characteristics of sewage sludge显示文摘Recently, tetrakis(hydroxymethyl)phosphonium sulfate(THPS) was found to play an important role in the sludge pretreatment process. However, the effects of THPS pretreatment on the characteristics of sewage sludge are still insufficiently understood.The properties of sludge after pretreatment with different concentrations of THPS were investigated in this study. The results showed that pH, dewatering ability, and particle size of sludge decreased with increase in THPS concentration. The volatile suspended solids(VSS) and total suspended solids(TSS) of sludge also decreased slightly with increase in THPS concentration. The specific oxygen uptake rate(SOUR) results suggested that lower THPS concentrations(≤ 1.87 mg/g VSS) enhanced the activity of sludge, but higher concentrations(≥ 1.87 mg/g VSS) inhibited it. Gram-negative bacteria with peritrichous flagellation(such as Pseudomonas, Escherichia, and Faecalibacterium) were extremely sensitive to THPS. The decrease in specific most probable numbers(MPNs) of pathogens(total coliforms and Escherichia coli) with the increase in THPS concentration also proved the sterilization ability of THPS in the sludge pretreatment process. Pretreatment of sludge with concentrations of THPS higher than 37.41 mg/g VSS would meet the pathogen requirements for land application of Class A biosolids. | Yunping Han Wenzhe Zhang Xiao Yu Panfen Yu Benyi Xiao Hao Yi | 2019 | Journal of Environmental Sciences2019,31,4: | 5 |
| 20 | Effects of Panax notoginseng saponins in a rat model of Alzheimer's disease显示文摘BACKGROUND: Modern pharmacological studies have demonstrated that Panax notoginseng saponins (PNS) can ameliorate and protect from neuropathological impairment. Whether PNS can improve the abnormality in memory and behavior of rats with Alzheimer's disease (AD) remains unclear. OBJECTIVE: Based on a Morris water maze test, this study aimed to measure improvements of spatial learning and memory by PNS in a rat model of AD, and to compare effects with huperzine A. DESIGN: A completely randomized grouping design, controlled animal experiment. SETTING: Center of Research & Development of New Drugs, Guangxi Traditional Chinese Medical University. MATERIALS: Ninety healthy Wistar rats of both genders, 15-month-old (n =75) and 3-month-old rats as young controls (n =15), were used for this study. The study was performed in accordance with animal ethics guidelines for the use and care of animals. PNS was provided by Weihe Pharmaceutical Co., Ltd (permission No. Z53021485, Yuxi, Yunan Province, China). Morris water maze equipment was provided by the Institute of Physiology, Chinese Academy of Science. METHODS: This study was performed at the Center of Research & Development of New Drugs, Guangxi Traditional Chinese Medical University from June 2003 to April 2005. Of the included rats, 15 healthy aged rats were randomly chosen as aged controls, and the remaining 60 aged rats were randomly divided into 4 groups with 15 rats in each: model group, PNS high- and low-dose groups, and an huperzine A group. Rats in the model group and the 3 treated groups were treated with intraperitoneal infusion of 9.6 g/L D-galactose (5 mL/kg) every day for 6 weeks successively to induce a subacute aging model. During week 7, animals received 1 μL ibotenic acid (5 g/L) bilaterally into the nucleus basalis of Meynert to create a rat model of AD. The young and old rat controls received, in parallel, a corresponding volume of saline. Two weeks later, rats in the PNS high- and low-dose groups were gavaged with 200 and 100 mg/kg PNS suspension, respectively. Huperzine A suspension (0.3 mg/kg) was used in the huperzine A group. Rats in the other 3 groups were gavaged with a corresponding volume of normal saline. In each group, administration was carried out once per day for 4 consecutive weeks. MAIN OUTCOME MEASURES: After administration, learning and memory abilities were measured by place navigation and spatial probe tests. Recording indices consisted of escape latency (time-to-platform), number of times to find the platform within 2 minutes, number of times the animal crosses the original platform location, and the percent of swimming time in each quadrant. RESULTS: Several rats died due to inflammatory reactions following brain lesion or intragastric administration; therefore, 61 rats were included in the final analysis. Results of spatial navigation test: Escape latency of rats in the model group was significantly prolonged, and number of times to find the platform within 2 minutes were significantly reduced compared with other groups (both P < 0.05). No significant differences in these two indices were measured among the administration groups (all P > 0.05). Results of spatial probe test: Times for crossing the original platform location and percent of time spent in the quadrant of original platform location were significantly less in the model group than in the other groups (P < 0.05). There were no significant differences in these two indices among the administration groups (P > 0.05). CONCLUSION: PNS can remarkably improve spatial learning and memory abilities of rats with AD. The therapeutic effect of PNS is not dose-dependent and is equivalent to the effect of huperzine A. | Zhenguo Zhong Zeqiang Qu Yunping Bao Naiping Wang Fengfen Zhang Wenyan Zhang | 2008 | Neural Regeneration Research2008,3,1: | 5 |