|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Phosphorylcholine polymer nanocapsules prolong the circulation time and reduce the immunogenicity of therapeutic proteins显示文摘蛋白质治疗,治疗学的蛋白质在那里被交付对待混乱,为治疗疾病被认为最安全、很直接的途径。然而,它的应用被有效策略的少量高度为在他们的管理以后在 vivo 交付蛋白质和治疗学的蛋白质的快速的清理限制。这里,我们表明能显著地延长治疗学的蛋白质的发行量时间以及最小化他们的 immunogenicity 的新奇策略。这被与抵抗蛋白质吸附的 crosslinked phosphorylcholine 聚合物的薄层包含单个蛋白质分子完成。通过广泛的细胞的研究,我们证明 crosslinked phosphorylcholine 聚合物壳有效地阻止包含的蛋白质是由巨噬细胞的 phagocytosed,它在 vivo 在 nanoparticles 的清理起一个必要作用。而且,聚合物壳阻止包含的蛋白质被有免疫力的房间识别。作为结果,对治疗学的蛋白质的有免疫力的回答有效地被压制。这个工作描述一个可行方法延长循环时间并且减少治疗学的蛋白质的 immunogenicity,它可以在多样的疾病的治疗支持新奇蛋白质治疗的发展和申请。 | Sheng Liang Yang Liu Xin Jin Gan Liu Jing Wen Linlin Zhang Jie Li Xubo Yuan Irvin S.Y. Chen Wei Chen Hui Wang Linqi Shi Xinyuan Zhu Yunfeng Lu | 2016 | Nano Research2016，9，4： | 11 |
| 2 | Hierarchical Manganese Oxide/Carbon Nanocomposites for Supercapacitor Electrodes显示文摘有装载的层次毛孔结构和可控制的 MnO2 的 MnO2/carbon nanocomposites 用一个自我限制的生长方法被综合了。这被 KMnO4 的氧化还原作用反应与包含层次毛孔的牺牲的碳底层完成。唯一的毛孔结构允许 nanocomposites 的合成,悦耳的 MnO2 装载直到 83 wt.% 。nanocomposites 的特定的电容增加了, MnO2 装载;在另一方面,电气化学的阻抗光谱学测量的传导性与增加装载的 MnO2 减少了。装载的 MnO2 的优化与高特定的电容和优秀的率能力导致了 nanocomposites。这个工作提供将为应用的一个大变化便于高效的 supercapacitor 材料的设计和制造的重要基本理解。 | Yiting Peng Zheng Chen Jing Wen Qiangfeng Xiao Ding Weng Shiyu He Hongbin Geng Yunfeng Lu | 2011 | Nano Research2011，4，2： | 8 |
| 3 | Novel Recombinant Seneca Valley Virus Isolated from Slaughtered Pigs in Guangdong Province显示文摘Dear Editor,Since the first outbreak in Brazil in 2015,Seneca Valley virus(SVV)associated with porcine idiopathic vesicular disease,has shown increasing geographic distribution.Cases of SVV have been reported from several countries including the United States(US),Colombia,Thailand,Canada,and China(Pasma et al.2008;Zhang et al.2015;Sun et al.2017;Wu et al.2017;Liu et al.2018;Saeng-Chuto et al.2018).SVV was first identified in the US in 2002 and is the only member of the genus Senecavirus in the family Picomaviridae(Hales et al.2008;Leme et al.2017).The SVV genome contains a large open reading frame(ORF)encoding a polyprotein,which is cleaved into various mature viral proteins including the leader protein(L),structural proteins(VP1,VP2,VP3,and VP4),and non-structural proteins(2A,2B,2C,3A,3B,3C,and 3D)(Hales et al 2008).Structural proteins bind to their receptor,anthrax toxin receptor 1,to mediate viral invasion and stimulate specific immunity of the host(Jayawardena et al.2018).Non-structural proteins such as 3C suppress innate immune responses by degrading interferon regulatory factor 3(IRF 3)and IRF7 and inhibit the activation of RIG-1,TBK1,and TRAF3 through deubiquitination(Xue et al 2018). | Jianxin Liu Yunfeng Zha Huizi Li Yanwei Sun Fuguang Wang Rong Lu Zhangyong Ning | 2019 | Virologica Sinica2019，34，6： | 7 |
| 4 | Characteristics of atmospheric aerosol optical depth variation over China in recent 30 years显示文摘This note retrieves the annual and monthly mean 0.75 urn aerosol optical depth (AOD) by using the daily direct solar radiation and sunshine duration data of 47 solar stations from 1961 to 1990. The characteristic of AOD variation over China in recent 30 years was analyzed. The results indicate that AOD increased obviously over China from 1961 to 1990. AOD increased most rapidly over the east part of Southwest China, the middle-and-lower reaches of the Yangtze River and the Tibetan Plateau. The increasing trend of AOD is also relatively distinct in North China, the Shandong Peninsula, east part of Qinghai Province, and coastal areas of Guangdong Province. However, in most parts of Northwest China and Northeast China, the increase of AOD is less significant, while in the west part of the Xinjiang Uygur Autonomous Region and some parts of Yunnan Province, AOD shows decreasing tendency. Generally, AOD reaches its maximum in spring and the minimum appears in summer. As to the linear trend, the maximum | LUO Yunfeng LU Daren HE Qing LI Weiliang ZHOU Xiuji | 2000 | Chinese Science Bulletin2000，45，14： | 6 |
| 5 | Validation and target gene screening of hsa-miR-205 in lung squamous cell carcinoma显示文摘 | Huang Wei Jin Yi Yuan Yunfeng Bai Chunxue Wu Ying Zhu Hongguang Lu Shaohua | 2014 | Chinese Medical Journal2014，，2： | 6 |
| 6 | Prolonging the plasma circulation of proteins by nano- encapsulation with phosphorylcholine-based polymer显示文摘突然在 vivo 循环是到蛋白质治疗学的普遍采纳的一个主要阻碍者。经由显著地展出的一个二拍子的圆舞封装过程与基于 phosphorylcholine 的聚合物的薄层包含蛋白质产生的蛋白质 nanocapsules 延长了血浆半衰期。而且,由与类似的尺寸构造 nanocapsules 但是不同表面费用和化学,我们为延长治疗学的蛋白质的血浆半衰期表明了通用策略。在里面一在里面 vitro 实验,牛的浆液白朊(BSA ) 的四种类型 nanocapsules 在磷酸盐缓冲区与胎儿的牛的浆液(FBS ) 被孵化盐(PBS ) ;由 HeLa 房间的房间举起被监视系统地在循环期间评估表面化学的特征。单个正电子排放计算断层摄影术的断层摄影术(SPECT ) 被采用在静脉内的管理以后在血浆集中的 vivo,以及 quantification 允许 BSA nanoparticle 分发的即时观察。这研究为为临床的使用翻译大量蛋白质提供一个实际方法。 | Linlin Zhang Yang Liu Gan Liu Duo Xu Sheng Liang Xinyuan Zhu Yunfeng Lu Hui Wang | 2016 | Nano Research2016，9，8： | 4 |
| 7 | Integration of nanoscale light emitters:an efficient ultraviolet and blue random lasing from NaYF_4:Yb/Tm hexagonal nanocrystals显示文摘Near infrared light-controlled release of payloads from ultraviolet-sensitive(UV-sensitive) polymer hydrogels or nanocarriers is one of the most promising strategies for biotherapy. Here, we propose the concept of light activation of NaYF_4:20%Yb, 2%Tm nanocrystals(NCs). NaYF_4:20%Yb, 2%Tm NCs are synthesized by a solvothermal method. Effective upconversion luminescence from NaYF_4:20%Yb, 2%Tm NCs excited by a continuous wave(CW) 980 nm laser is obtained. The NaYF_4:20%Yb, 2%Tm NCs are then used as a laser gain medium and sandwiched between Al and quartz reflectors to form laser microcavities. UV and blue upconverted random lasing is obtained from the laser microcavities. Hence, we verify explicitly that the NaYF_4:Yb, Tm NCs support UV and blue upconversion random lasing via a 980 nm nanosecond laser excitation. Our work provides what we believe is a new concept for precision and localized cancer therapy by external light excitation. | YA-PEI PENG WEI LU PENGPENG REN YIQUN NI YUNFENG WANG LONG ZHANG YU-JIA ZENG WENFEI ZHANG SHUANGCHEN RUAN | 2018 | Photonics Research2018，6，10： | 4 |
| 8 | Frequency-modulated continuous waves controlled by space-time-coding metasurface with nonlinearly periodic phases显示文摘The rapid development of space-time-coding metasurfaces(STCMs)offers a new avenue to manipulate spatial electromagnetic beams,waveforms,and frequency spectra simultaneously with high efficiency.To date,most studies are primarily focused on harmonic generations and independent controls of finite-order harmonics and their spatial waves,but the manipulations of continuously temporal waveforms that include much rich frequency spectral components are still limited in both theory and experiment based on STCM.Here,we propose a theoretical framework and method to generate frequency-modulated continuous waves(FMCWs)and control their spatial propagation behaviors simultaneously via a novel STCM with nonlinearly periodic phases.Since the carrier frequency of FMCW changes with time rapidly,we can produce customized time-varying reflection phases at will by the required FMCW under the illumination of a monochromatic wave.More importantly,the propagation directions of the time-varying beams can be controlled by encoding the metasurface with different initial phase gradients.A programmable STCM prototype with a full-phase range is designed and fabricated to realize reprogrammable FMCW functions,and experimental results show good agreement with the theoretical analyses. | Jun Chen Ke Jun Yan Dai Jun Wei Zhang Zhanye Chen Ming Zheng Chen Yunfeng Lu Lei Zhang Li Wang Qun Yan Zhou Long Li Jin Shan Ding Qiang Cheng Tie Jun Cui | 2022 | Light(Science & Applications)2022，11，10： | 4 |
| 9 | Gene expression of vascular endothelial growth factor A and hypoxic adaptation in Tibetan pig显示文摘Background: Vascular endothelial growth factor A(VEGFA) can induce endothelial cell proliferation, promote cell migration, and inhibit apoptosis. These processes play key roles in physiological blood vessel formation and pathological angiogenesis.Methods: In this study, we examined VEGFA gene expression in the heart, liver, and kidney of Tibetan pigs(TP), Yorkshire pigs that migrated to high altitudes(YH), and Yorkshire pigs that lived at low altitudes(YL).We used PCR and Sanger sequencing to screen for single nucleotide polymorphisms(SNPs) in 5'-flanking DNA and exons of the VEGFA gene. Quantitative real-time PCR and western blots were used to measure expression levels and PCR products were sequenced.Results: Results showed that the VEGFA m RNA and protein expression in heart, liver and kidney of TP was higher than that in YH and YL. In addition, the m RNA sequence of the pig VEGFA gene was conserved among pig breeds, and only five SNPs were found in the 5'-flanking region of the VEGFA gene, the allele frequency distributions of the 5 SNPs were not significantly different between the TP, Yorkshire(YL), and Diannan small-ear(DN) pig populations.Conclusion: In conclusion, the Tibetan pig showed high levels of VEGFA gene expression in several hypoxic tissues, which suggests that the VEGFA gene may play a major functional role in hypoxic adaptation. | Bo Zhang Yangzong Qiangba Peng Shang Yunfeng Lu Yuzeng Yang Zhixiu Wang Hao Zhang | 2016 | Journal of Animal Science and Biotechnology2016，7，4： | 4 |
| 10 | Confined growth of Li4Ti5O12 nanoparticles in nitrogendoped mesoporous graphene fibers for high-performance lithium-ion battery anodes显示文摘有电气化学的活动的 Nanomaterials 总是正在受不了聚集,特别地在高温度的合成过程期间,它将导致减少的精力存储性能。这里,层次地组织了锂 titanate/nitrogen-doped 多孔的 graphene 纤维 nanocomposites 被使用李 4 Ti 5 在做氮的 mesoporous graphene 纤维(NPGF ) 的 O 12(LTO ) nanoparticles。有一致毛孔结构的 NPGF 作为模板被使用招待 LTO 先锋,在 800 | Xilai Jia Yunfeng Lu Fei Wei | 2016 | Nano Research2016，9，1： | 4 |
| 11 | Comparative yield and efficiency of strategies based on risk assessment and fecal immunochemical test in colorectal cancer screening:A cross-sectional population-based analysis显示文摘Objective:Integration of risk stratification into fecal immunochemical test(FIT)might aid in the suboptimal detection of advanced neoplasms by FIT in colorectal cancer(CRC)screening.A comparative study was conducted to evaluate the participation and diagnostic yield of the parallel combination of questionnaire-based risk assessment(QRA)and FIT,FIT-only and QRA-only strategies in a CRC screening program in China.Methods:The study included 29,626 individuals aged 40-74 years and invited to participate in a CRC screening program in China.Participants were first invited to undertake QRA and one-time FIT(OC-sensor).Participants with positive QRA or FIT were deemed to be high-risk individuals who were recommended for subsequent colonoscopy.Participation,detection rate,and resource demand for colonoscopy were calculated and compared.Results:Of the 29,626 invitees,20,203 completed the parallel combination,8,592 completed the QRA-only,and11 completed the FIT-only strategy.For the parallel combination,FIT-only,and QRA-only strategies,the overall positivity rates were 10.2%(2,928/28,806),5.4%(1,096/20,214),and 6.8%(1,944/28,795),respectively;the yield of advanced neoplasm per 10,000 invitees were 46.9[95%confidence interval(95%CI):39.8-55.4],36.8(95%CI:30.5-44.4),and 12.2(95%CI:8.8-16.8),respectively;the positive predictive values for detecting advanced neoplasms among participants who completed colonoscopy were 4.7%(95%CI:4.0%-5.6%),9.9%(95%CI:8.3%-11.9%),and 1.9%(95%CI:1.3%-2.6%),respectively;the number of colonoscopies required to detect one advanced neoplasm was 11.4(95%CI:9.8-13.4),5.7(95%CI:4.8-6.7),and 28.4(95%CI:20.7-39.2),respectively.Conclusions:The parallel combination of QRA and FIT did not show superior efficacy for detecting advanced neoplasm compared with FIT alone in this CRC screening program. | Hongda Chen Le Wang Ming Lu Chen Zhu Yunfeng Zhu Weihua Ma Xinmin Chen Lingbin Du Wanqing Chen | 2021 | Chinese Journal of Cancer Research2021，33，4： | 3 |
| 12 | Vapor deposition of aluminium oxide into N-rich mesoporous carbon framework as a reversible sulfur host for lithium-sulfur battery cathode显示文摘Restraining the shuttle effects of lithium polysulfides is the key to improve the cycling reversibility and stability of lithium-sulfur(Li-S)batteries for which design of robust sulfur hosts has been regarded as the most effective strategy.In this work,we report a new type of hybrid sulfur host which is composed of Al_(2)O_(3) homogenously decorated in nitrogen-rich mesoporous carbon framework(NMC-Al_(2)O_(3)).The NMC-Al_(2)O_(3) hybrid host features a poly-dispersed spherical morphology and a mesoporous configuration with high surface area and large pore volume that can accommodate a high sulfur content up to 73.5 wt.%.As a result,the fabricated NMC-Al_(2)O_(3)-S cathode exhibits all-round improvements in electrochemical properties in term of capacities(1,212 mAh·g^(-1)at 0.2 C;755 mAh·g^(-1)at 2 C),cycling charge-discharge reversibility(sustainably 100%efficiencies)and stability(1,000 cycles with only 0.023%capacity decay per cycle at 0.5 C).By contrast,the Al_(2)O_(3)-free NMC-S cathode shows both decreased capacities and rapidly descending Coulombic efficiencies during cycling.Density functional theory(DFH')calculations further reveal that the implanted Al_(2)O_(3) can greatly enhance the chemical adsorption and catalytic conversion for various lithium polysulfides and thereby effectively prevent the polysulfide shuttling and significantly improve the utilizability,reversibility and stability of sulfur cathode. | Fei Sun Zhibin Qu Hua Wang Xiaoyan Liu Tong Pei Rui Han Jihui Gao Guangbo Zhao Yunfeng Lu | 2021 | Nano Research2021，14，1： | 3 |
| 13 | Study on the relationship between waste classification,combustion condition and dioxin emission from waste incineration显示文摘Domestic waste in China is mainly collected as a combination of different types of materials.The components are variable and complex,with very different combustion characteristics making it difficult to optimize the burning to reduce pollution.There are still some controversies about the accuracy of using carbon monoxide(CO)emission to characterize waste incineration performance.Here,we investigated the relationship between waste classification,incineration conditions and dioxin emission and concluded that the concentration of CO in flue gas could not be used as the only criterion of combustion efficiency and safety.Considering the close relationship between the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs)and products of incomplete combustion,the relatively low concentrations of CO are not a reliable indicator that an incinerator equipped with an activated carbon injection system and fabric filter could achieve the national standards for PCDD/F emission.The goal,therefore,is not only to lower the emission of PCDD/Fs and other pollutants through clas-sifying the waste components at the source,but also to reduce the need for the treatment of incinerated waste to protect the environment and to increase the power generation efficiency of municipal solid waste incineration(MSWI)plants.As the demand for waste disposal continues to rapidly increase,the need for a safe waste incineration system with dioxin emission controls makes the classification of waste an indispensable part of future MSWI systems. | Xiaodong Li Yunfeng Ma Mengmei Zhang Mingxiu Zhan Peiyue Wang Xiaoqing Lin Tong Chen Shengyong Lu Jianhua Yan | 2019 | Waste Disposal and Sustainable Energy2019，1，2： | 3 |
| 14 | Compensation Control and Parameters Design for High Frequency Resonance Suppression of MMC-HVDC System显示文摘Large time delay is one of the inherent features of a modular multilevel converter(MMC)-based high voltage direct current(HVDC)system and is the main factor leading to the unfavorable’negative resistance and inductance’characteristic of MMC impedance.Research indicates that this characteristic interacting with the capacitive characteristics of an AC system is the cause of high frequency resonance(HFR)in the Yu-E HVDC project.As the current controller is one of the main factors that affects the MMC impedance,a compensation control to imitate the paralleled impedance at the point of common coupling(PCC)is proposed.Therefore,the structure and parameter design of the compensation controller are core to realizing HFR suppression.There are two potentially risky frequency ranges of HFRs(around 700 Hz and 1.8 kHz)in the studied AC system within 2.0 kHz.The core concept of HFR suppression is to make the phase angle of MMC impedance smaller than 90◦in the two risky frequency ranges according to impedance stability theory.Hence,the design parameters aim to coordinate the phase angle of MMC impedance in the two risky frequency ranges.In this paper,three types of compensation controller are studied to suppress HFRs,namely,first-order low pass filter(LPF),second-order LPF,and third-order band pass filter.The results of parameter design show that the first-order LPF cannot suppress both HFRs simultaneously.The second-order LPF can suppress both HFRs,however,it introduces a DC component into the current control loop.Therefore,a high pass filter is added to form the recommended third-order controller.All parameter ranges of the compensation controller are derived using analytical expressions.Finally,the correctness of the parameter design is proofed using time-domain simulations. | Yunfeng Li Hui Pang Ming Kong Jingjing Lu Ke Ji Guangfu Tang | 2021 | CSEE Journal of Power and Energy Systems2021，7，6： | 3 |
| 15 | Clinical Analysis of 240 Patients with HLA-B27 Associated Acute Anterior Uveitis显示文摘Purpose: To analyze the prevalence of HLA-B27 associated acute anterior uveitis and to identify its clinical features. Methods: A total of 240 patients with HLA-B27 associated acute anterior uveitis,who were admitted to Zhejiang Ophthalmologic Hospital between December 2006 and October 2012, were retrospectively analyzed.The age of onset,sex,affected eyes,HLA-B27 antigen detection,recurrence,joint involvement, and surgical complications were investigated. Results:The average age of onset was 37.0 ±12.0 years and the ratio of male to female patients was 2.4:1. Most cases had alternate unilateral or bilateral involvement. Among all participants, 234 cases (97.5%) were HLA-B27 positive, and 124 cases (51.7%) had spondyloarthropathies (SpA), dominated by 108 cases with ankylosing spondylitis. (AS,45.0%),and mostly seen in male subjects(P<0.05).Six patients were HLA-B27 negative(2.5%)and on statistical significance was noted between male and female patients (P >0.05).A total of 193 cases (80.4%) presented with complications, mainly fibrinous exudation, posterior synechia, and vitreous opacity. Conclusion: HLA-B27 that is associated acute anterior uveitis with a relatively high incidence and recurrence presents with more severe clinical features than does idiopathic acute anterior uveitis,and it often accompanies systemic arthritic diseases. HLA-B27 antibody detection is associated with the diagnosis and treatment of acute anterior uveitis. | Yuqin Wang Xiaoya Lu Yulin Wang Liping Mao Yunfeng Gu Pengfei Chen Meiqin Zheng | 2012 | Eye Science2012，27，4： | 3 |
| 16 | Rail temperature rise characteristics caused by linear eddy current brake of high-speed train显示文摘The rail temperature rises when the linear eddy current brake of high-speed train is working,which may lead to a change of rail physical characteristics or an effect on train operations.Therefore,a study concerning the characteristics of rail temperature rise caused by eddy current has its practical necessity.In the research,the working principle of a linear eddy current brake is introduced and its FEA model is established.According to the generation mechanism of eddy current,the theoretical formula of the internal energy which is produced by the eddy current is deduced and the thermal load on the rail is obtained.ANSYS is used to simulate the rail temperature changes under different conditions of thermal loads.The research result shows the main factors which contribute to the rising of rail temperature are the train speed,brake gap and exciting current.The rail temperature rises non-linearly with the increase of train speed.The rail temperature rise curve is more sensitive to the exciting current than the air gap.Moreover,the difference stimulated by temperature rising between rails of 60 kg/m and 75 kg/m is presented as well. | Xiaoshan Lu Yunfeng Li Mengling Wu Jianyong Zuo Wei Hu | 2014 | Journal of Traffic and Transportation Engineering(English Edition)2014，1，6： | 3 |
| 17 | SPECIAL ISSUE: RELIGION AND SOCIETY: CROSS-CULTURAL COMMUNICATION:Beyond exclusive religions: challenges for the sociology of religion in China显示文摘中国宗教的快速发展及相关研究将有可能重塑宗教社会学的边界。由于过分强调对排他性宗教的研究,宗教社会学一度被称为“基督宗教社会学”。然而,非排他性宗教主导的中国社会却对此提出了挑战,同时也为其提供了发展机遇。在微观层面上,非排他性宗教的普遍存在对植根于西方社会的一些核心概念——如“改宗”和“委身”——构成了挑战。在组织层面上,它挑战着“教派-教会”理论,提醒我们要对非科层化的宗教组织给予关注。在市场层面上,社会学家可以考察非排他性宗教何以在中国宗教兴盛的原因。 | Lu Yunfeng Graeme Lang | 2010 | Social Sciences in China2010，31，1： | 3 |
| 18 | Molecular cloning and characterization of a gene encoding the proline transporter protein in common bean(Phaseolus vulgaris L.)显示文摘As a typical compatible solute, proline is accumulated in plants under environmental stresses. Proline transporter(Pro T) plays an important role in proline distribution between plant organs. Using a candidate gene approach, we cloned a c DNA sequence for Pro T from common bean(Phaseolus vulgaris L.) and designated the gene Pv Pro T. The deduced amino acid sequence of Pv Pro T showed high similarity to Bet/Pro T proteins from other leguminous plants, and the highest similarity was observed with mothbean(Vigna aconitifolia L.) Vu Pro T.Relative quantification of the m RNA level of Pv Pro T using real-time PCR analysis showed that the Pv Pro T transcript level was higher in leaves than in stems and roots of common bean plants subjected to drought and salt stress. Under 20%(w/w) PEG-6000 treatment,drought-resistant plants expressed a higher level of Pv Pro T transcripts than droughtsensitive plants. Although heterologous expression of Pv Pro T in the Escherichia coli mutant mkh13 showed that Pv Pro T exhibited uptake activities for proline and betaine, no betaine content was detected in the common bean. These findings suggest that Pv Pro T plays an important role in the transportation of proline in common bean plants exposed to drought and salt stress. | Jibao Chen Jing Wu Yunfeng Lu Yuannan Cao Hui Zeng Zhaoyuan Zhang Lanfen Wang Shumin Wang | 2016 | The Crop Journal2016，4，5： | 2 |
| 19 | Enantioselective Resolution of (±)-l-Phenylethyl Acetate by Using the Whole Cells of Deep-sea Bacterium Bacillus sp. DL-2显示文摘Bacillus sp. DL-2 was isolated from the deep sea of the Western Pacific and further utilized as novel biocatalysts to efficiently asymmetrically hydrolyze (±)-1-phenylethyl acetate. After the optimization of hydrolytic reactions, chiral chemicals (R)1-phenylethanol and (S)-l-phenylethyl acetate were obtained with high optical purities (96% and 99.8%, respectively). Our research is about the asymmeric hydrolysis of (±)-1-phenylethyl acetate using whole-cell biocatalysts. In addition, the optical purity of (S)-l-phenylethyl acetate generated through the kinetic resolution of (±)-1-phenylethyl acetate using the whole-cells of Bacillus sp. DL-2 was the highest report so far. Using the whole cells of deep sea bacterium Bacillus sp. DL-2 as the biocatalysts is an enviromnentally friendly method and will play critical roles in industrial asymmetric synthesis. | DONG Lu XU Yongkai ZHANG Yun SUN Aijun HU Yunfeng | 2019 | Chemical Research in Chinese Universities2019，35，5： | 2 |
| 20 | Dietary calcium requirements of broilers fed a conventional corn-soybean meal diet from 1 to 21 days of age显示文摘Background:The current calcium(Ca)recommendation for broilers is primarily based on studies conducted more than 30 years ago with birds of markedly different productive potentials from those which exist today.And the response indicators in these studies are mainly growth performance and bone ash percentage.Therefore,the present study was carried out to investigate the effect of dietary Ca level on growth performance,serum parameters,bone characteristics and Ca metabolism-related gene expressions,so as to estimate dietary Ca requirements of broilers fed a conventional corn-soybean meal diet from 1 to 21 days of age.Methods:A total of 4201-day-old Arbor Acres male broilers were randomly assigned to 1 of 7 treatments with 6 replicates(10 birds per cage)and fed the corn-soybean meal diets containing 0.60%,0.70%,0.80%,0.90%,1.00%,1.10%or 1.20%Ca for 21 days.Each diet contained the constant non-phytate phosphorus content of about 0.39%.Results:The average daily gain decreased linearly(P<0.001)as dietary Ca level increased.The serum and tibia alkaline phosphatase(ALP)activities,tibia bone mineral density(BMD),middle toe BMD,tibia ash percentage,tibia breaking strength,and tibia ALP protein expression level were affected(P<0.05)by dietary Ca level,and showed significant quadratic responses(P<0.02)to dietary Ca levels.The estimates of dietary Ca requirements were 0.80 to 1.00%based on the best fitted broken-line or quadratic models(P<0.03)of the above serum and bone parameters,respectively.Conclusions:The results from the present study indicate that the Ca requirements would be about 0.60%to obtain the best growth rate,and 1.00%to meet all of the Ca metabolisms and bone development of broilers fed a conventional corn-soybean meal diet from 1 to 21 days of age. | Shiping Bai Yunfeng Yang Xuelian Ma Xiudong Liao Runlian Wang Liyang Zhang Sufen Li Xugang Luo Lin Lu | 2022 | Journal of Animal Science and Biotechnology2022，13，4： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员