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The progress of nutritional support for chronic obstructive pulmonary disease

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Food Therapy and Health Care 2019年第3期1卷 89-96页

作者： Jiao-Jiao Wang mei tang Yun-Xian Ma Peng-Cheng Zhou School of Clinical Medicine Chengdu University of Traditional Chinese Medicine Chengdu Sichuan province China Department of Respiratory Medicine Hospital of Chengdu University of Traditional Chinese Medicine Chengdu 610072 Sichuan Province China

The patients with chronic obstructive pulmonary disease (COPD) often occur weight loss and reduced muscle mass, which leads to decreased exercise capacity and vital capacity. The nutritional status is closely related to the prognosis of patients with COPD and nutritional support has played an important role in the treatment of COPD. In order to provide proper nutritional support, this article reviews the progress of nutritional support in COPD from the causes of malnutrition, energy demand assessment, assessment of nutritional risk and nutritional support methods. Moreover, this review specially reviewed the application of traditional Chinese medicine diet.

关键词： Chronic obstructive pulmonary disease Nutritional factors support methods Traditional Chinese medicine diet

Laboratory investigation on hydraulic fracture propagation in sandstone-mudstone-shale layers

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Petroleum Science 2022年第4期19卷 1664-1673页

作者： Jiang-Chuan He Kuang-Sheng Zhang Han-Bin Liu mei-Rong tang Xue-Lin Zheng Guang-Qing Zhang PetroChina Changqing Oilfield Company Xi′an710018ShaanxiChina College of Petroleum Engineering China University of Petroleum(Beijing)Beijing102249China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China

During the stimulating unconventional reservoirs, the vertical propagation of hydraulic fractures is crucial for enlarging the stimulated reservoir volume, especially in multi-layers of sandstone, mudstone and shale(sand-mud-shale). To investigate the effects of lithological interface and fracturing fluid viscosity on the fracture propagation vertically in the multi-layers, hydraulic fracturing experiments in laboratory were performed on the outcrop samples of 30 cm × 30 cm × 30 cm collected from Yanchang Formation in Ordos Basin. The results show that hydraulic fractures are multi-branched and zig-zagged when they initiate in shale, simple when they commence in sandstone or mudstone. Hydraulic fractures created with low-viscosity fracturing fluid can only cross sandstone from mudstone, but those induced by high-viscosity fracturing fluid can cross the sand-mud-shale layers. Furthermore, the high-viscosity fracturing fluid reduces the fractures complexity in shale, facilitating vertical fracture propagation. The injection pressure fluctuates slightly as the hydraulic fracture extends from shale to sandstone or mudstone, otherwise it fluctuates significantly. From the laboratory investigation, a hydraulic fracturing scheme for Chang 7 Member was proposed, with its feasibility proved in field tests.

关键词： Sandstone-mudstone-shale Multi-layers Hydraulic fracturing experiments Lithological interface

Experimental study on the size effect on the equation of state of concretes under shock loading

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Defence Technology（防务技术） 2024年第3期33卷 160-167页

作者： mei Li Jian Cui Yanchao Shi Baijian tang Xin Chen Key Laboratory of Coast Civil Structural Safety of the Ministry of Education Tianjin UniversityTianjin 300072China School of Civil Engineering Suzhou University of Science and Technology1701 Binhe RoadSuzhou 215011JiangsuChina School of Civil Engineering Tianjin UniversityTianjin 300072China

Adopting the classical theory of hydrocodes,the constitutive relations of concretes are separated into an equation of state(EoS)which describes the volumetric behavior of concrete material and a strength model which depicts the shear properties of concrete.The experiments on the EoS of concrete is always challenging due to the technical difficulties and equipment limitations,especially for the specimen size effect on the EoS.Although some researchers investigate the shock properties of concretes by fly-plate impact tests,the specimens used in their tests are usually in one size.In this paper,the fly-plate impact tests on concrete specimens with different sizes are performed to investigate the size effect on the shock properties of concrete materials.The mechanical background of the size effect on the shock properties are revealed,which is related to the lateral rarefaction effect and the deviatoric stress produced in the specimen.According to the tests results,the modified EoS considering the size effect on the shock properties of concrete are proposed,which the bulk modulus of concrete is unpredicted by up to 20% if size effects are not accounted for.

关键词： Concrete Equation of state Size effect Shock wave Fly-plate impact test

Prognostic scores in primary biliary cholangitis patients with advanced disease

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世界胃肠外科杂志:英文版(电子版) 2023年第8期15卷 1774-1783页

作者： Juan Feng Jia-Min Xu Hai-Yan Fu Nan Xie Wei-Min Bao Ying-mei tang Department of Gastroenterology The Second Affiliated Hospital of Kunming Medical UniversityKunming 650101Yunnan ProvinceChina Department of General Surgery Yunnan Provincial First People’s HospitalKunming 650032Yunnan ProvinceChina

BACKGROUND Due to the chronic progressive disease characteristics of primary biliary cholangitis(PBC),patients with advanced PBC should not be ignored.Most prognostic score studies have focused on early stage PBC.AIM To compare the prognostic value of various risk scores in advanced PBC to help PBC patients obtain more monitoring and assessment.METHODS This study considered patients diagnosed with PBC during hospitalization between 2015 and 2021.The clinical stage was primarily middle and late,and patients usually took ursodeoxycholic acid(UDCA)after diagnosis.The discriminatory performance of the scores was assessed with concordance statistics at baseline and after 1 year of UDCA treatment.Telephone follow-up was conducted to analyze the course and disease-associated outcomes.The follow-up deadline was December 31,2021.We compared the risk score indexes between those patients who reached a composite end point of death or liver transplantation(LT)and those who remained alive at the deadline.The combined performance of prognostic scores in estimating the risk of death or LT after 1 year of UDCA treatment was assessed using Cox regression analyses.Predictive accuracy was evaluated by comparing predicted and actual survival through Kaplan-meier analyses.RESULTS We included 397 patients who were first diagnosed with PBC during hospitalization and received UDCA treatment;most disease stages were advanced.After an average of 6.4±1.4 years of follow-up,82 patients had died,and 4 patients had undergone LT.After receiving UDCA treatment for 1 year,the score with the best discrimination performance was the Mayo,with a concordance statistic of 0.740(95%confidence interval:0.690-0.791).The albumin-bilirubin,GLOBE,and Mayo scores tended to overestimate transplant-free survival.Comparing 7 years of calibration results showed that the Mayo score was the best model.CONCLUSION The Mayo,GLOBE,UK-PBC,and ALBI scores demonstrated comparable discriminating performance for advanced stage PBC.The Mayo score showed optimal discriminator

关键词： Primary biliary cholangitis Prognostic value Liver transplantation Cholangitis Mayo score

Effect of BaSO_(4) on phase composition and sintering process of iron ore fines

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Journal of Iron and Steel Research(International) 2022年第3期29卷 408-417页

作者： Jian-tao Ju Chen-mei tang Guang-heng Ji Xiang-dong Xing Gui-qing Zhao Xin-tai Jiang Feng-lin Lu School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina Research Center of Metallurgical Engineering and Technology of Shaanxi Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina JISCO Iron and Steel Research Institute Jiayuguan735100ShaanxiChina

Iron ore containing BaSO_(4) may have a series of effects on the quality of the sinter and performance of the blast furnace.Thus,the effect mechanism of BaSO_(4)(0-6.0 mass%)on the compressive strength,mineral composition,and microstructure of the sinter was investigated.The experimental results show that the compressive strength of the sintered samples initially increases and then decreases when the BaSO_(4) content increases from 0 to 6.0 mass%,reaching a peak value of 12.78 kN with a BaSO_(4) content of 1.0 mass%.Thermal analysis indicates that BaSO_(4) initially decomposes to produce BaO at 1468 K in the presence of iron ore.BaO combines with Fe_(2)O_(3) forming barium ferrite(Ba_(2)Fe_(6)O_(11)),which exists in the sintered sample with a granular form.BaO also dissolves in calcium ferrite and slag to promote the formation of calcium ferrite and barium glass,respectively.The content of needle-like calcium ferrite gradually increases and then decreases with the increase in BaSO_(4) content.Hematite exists in a plate-like form.The generation of dicalcium ferrite is promoted by increasing the BaSO_(4) addition from 2.0 to 6.0 mass%.

关键词： Sinter Barium sulfate Hematite Barium ferrite Mineral structure

Functional layer engineering to improve performance of protonic ceramic fuel cells

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Rare Metals 2023年第7期42卷 2250-2260页

作者： Ning Wang Zhi-Yin Huang Chun-mei tang Li-Xin Xing Ling Meng Yoshitaka Aoki Lei Du Si-Yu Ye Huangpu Hydrogen Energy Innovation Center School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou510006China Graduate School of Chemical Sciences and Engineering Hokkaido UniversitySapporo060-8628Japan Faculty of Engineering Hokkaido UniversitySapporo060-8628Japan

Protonic ceramic fuel cells(PCFCs)have been attracting increasing attention because of their advances in high-efficiency power generation in an intermediate-temperature range,as compared to the high-temperature solid oxide fuel cells(SOFCs).The greatest difference between PCFCs and SOFCs is the specific requirement of protonic(H+)conductivity at the PCFC cathode,in addition to the electronic(e^(-))and oxide-ion(O^(2-))conductivity.The development of a triple H^(+)/e^(-)/O^(2-)conductor for PCFC cathode is still challenging.Thus,the most-widely used cathode material is based on the mature e^(-)/O^(2-)conductor.However,this leads to insufficient triple phase boundary(TPB),i.e.,reaction area.Herein,an efficient strategy that uses a~100 nm-thick proton conductive functional layer(La_(0.5)Sr_(0.5)CoO_(3-δ),LSC55)in-between the typical La_(0.8)Sr_(0.2)CoO_(3-δ)cathode(a mature e-/O^(2-)conductor,LS C 82)and B aZr_(0.4)Ce_(0.4)Y_(0.1)Yb_(0.)1O_(3-δ)elec trolyte(11 mm in diameter,20μm in thickness)is proposed to significantly enhance the reaction area.Reasonably,the ohmic resistance and polarization resistance are both decreased by 47%and 62%,respectively,compared with that of PCFCs without the functional layer.The power density of the PCFC with such a functional layer can be raised by up to 2.24 times,superior to those described in previous reports.The enhanced PCFC performances are attributed to the well-built TPB and enhanced reaction area via the functional layer engineering strategy.

关键词： Protonic ceramic fuel cell(PCFC) Cathode functional layer(CFL) Power density Triple phase boundary(TPB)

66个广西审定丝苗品种农艺和品质性状多样性鉴定与聚类分析

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中国稻米 2024年第2期30卷 82-86页

作者：王强李炜罗同平唐梅孙富陈雷何彰杰莫海玲何聪卢宏琮广西壮族自治区农业科学院水稻研究所/广西水稻遗传育种重点实验室/广西水稻优质化育种研究人才小高地南宁530007 广西轻工业科学技术研究院南宁530031

为了明确广西审定水稻丝苗品种的农艺和品质性状差异与趋同程度,选用2017—2023年广西审定的66个丝苗品种为材料,对18个主要农艺和品质性状进行鉴定、表型多样性分析和品种间聚类分析。结果表明,这66个品种农艺性状表型和品质性状多样... 详细信息

为了明确广西审定水稻丝苗品种的农艺和品质性状差异与趋同程度,选用2017—2023年广西审定的66个丝苗品种为材料,对18个主要农艺和品质性状进行鉴定、表型多样性分析和品种间聚类分析。结果表明,这66个品种农艺性状表型和品质性状多样性丰富;基于农艺性状表型和品质性状的品种间欧氏距离聚类,可分为5类,包含29个品种的类群农艺性状表型和品质性状表现趋同,此类群包含两系杂交稻品种、三系杂交稻品种和常规稻品种;两系杂交稻品种表型多样性最高,分布于各个类群中,常规稻最低,基本被聚在同一大类中。类群间农艺性状表型和品质性状差异明显,具有相同母本或相同父本的品种基本聚归同类,品种间欧氏距离短。育种组配间会出现亲缘关系较远、农艺和品质性状接近的趋同情况。结果可为广西丝苗型水稻品种的组配选育和推广应用提供理论支持。

关键词：水稻品种农艺性状多样性聚类分析广西

MicroRNAs:protective regulators for neuron growth and development

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Neural Regeneration Research 2023年第4期18卷 734-745页

作者： Zhi-Xuan Ma Zhen Liu Hui-Hui Xiong Zong-Pu Zhou Li-Si Ouyang Fu-Kang Xie Ya-mei tang Zhong-Dao Wu Ying Feng School of Medicine South China University of TechnologyGuangzhouGuangdong ProvinceChina Zhongshan School of Medicine Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Neurology Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Key Laboratory of Tropical Disease Control Ministry of EducationZhongshan School of MedicineSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

MicroRNAs(miRNAs)play an important regulatory role in neuronal growth and development.Different mi RNAs target different genes to protect neurons in different ways,such as by avoiding apoptosis,preventing degeneration mediated by conditional mediators,preventing neuronal loss,weakening certain neurotoxic mechanisms,avoiding damage to neurons,and reducing inflammatory damage to them.The high expression of mi RNAs in the brain has significantly facilitated their development as protective targets for therapy,including neuroprotection and neuronal recovery.mi RNA is indispensable to the growth and development of neurons,and in turn,is beneficial for the development of the brain and checking the progression of various diseases of the nervous system.It can thus be used as an important therapeutic target for models of various diseases.This review provides an introduction to the protective effects of mi RNA on neurons in case of different diseases or damage models,and then provides reference values and reflections on the relevant treatments for the benefit of future research in the area.

关键词： brain damage miRNA neurodegenerative disorders neuronal apoptosis neuronal protection

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碳酸钙还原低热耦合与二氧化碳绿色原位转化

化学试剂 2024年第6期46卷 39-45页

作者：王正义唐美张冰姿蔡正宇何国强中国计量大学材料与化学学院浙江杭州310018 广西大学物理科学与工程技术学院广西南宁530004 杭州职业技术学院生态健康学院浙江杭州310018 三亚学院盛宝金融科技商学院海南三亚572022

碳酸钙(CaCO_(3))是水泥和钢铁生产等行业常见的矿产资源。然而,其高温分解产生的能源损失和二氧化碳(CO_(2))排放是亟需解决的问题。因此,提出了利用甲烷(CH_(4))、氢气(H_(2))、碳(C)和乙醇(C 2H 5OH)与亚微米级CaCO_(3)的耦合反应以... 详细信息

碳酸钙(CaCO_(3))是水泥和钢铁生产等行业常见的矿产资源。然而,其高温分解产生的能源损失和二氧化碳(CO_(2))排放是亟需解决的问题。因此,提出了利用甲烷(CH_(4))、氢气(H_(2))、碳(C)和乙醇(C 2H 5OH)与亚微米级CaCO_(3)的耦合反应以降低分解温度并实现CO_(2)原位转化,在此基础上进行了热力学和耦合产物的分析,同时在经济层面上展开了对比。研究表明,CH_(4)对CaCO_(3)分解温度的降低最显著,H_(2)次之;C被用作还原剂时副产物最少;C 2H 5OH与CaCO_(3)的耦合反应中H_(2)和一氧化碳(CO)的产率最高。通过还原剂耦合不仅可以在较低温度下再生氧化钙(CaO),还可将CO_(2)原位转化为高值产物,如H_(2)和CO,从而减少CO_(2)排放。

关键词： CaCO_(3)分解耦合反应低热还原 CO_(2)原位转化 CO_(2)排放