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| 1 | Improving Yield and Nitrogen Use Efficiency Simultaneously for Maize and Wheat in China: A Review显示文摘同时完成两高收益和高氮使用效率(NUE ) 与对食物,自然资源的弄空,和环境的恶化的增加的全球需求成为了主要挑战。作为在世界上的 N 化肥的最伟大的消费者,中国农民滥用了 N,并且因为 N 举起收益关系的有限理解,在庄稼 N 需求和 N 供应之间有差的 synchrony。处理这个问题,这研究为二个学生的不同收益范围评估了全部、动态的 N 要求庄稼(玉米和小麦) ,和到 N 管理策略的建议改进。整个植物的 N 未葬举起要求每谷物产量(N req ) 开始与谷物收益改进死亡了然后停滞,并且然而,大多数农民仍然相信更多的化肥和更高的谷物产量是同义的。当玉米产量增加了从时 < 7.5 到 > 12.0 Mg 哈 −1, N req 从 19.8 ~ 17.0 kg Mg −1 谷物减少了。为小麦,它为谷物产量从 27.1 kg Mg −1 谷物减少了 < 4.5 Mg 哈 −1 到为产量的 22.7 kg Mg −1 谷物 > 9.0 Mg 哈 −1 。同时,干燥物质的百分比和在中间迟了的成长季节的 N 累积与谷物产量显著地增加了,它显示 N 授精应该在中间迟了的阶段被集中当农民们经常在播种前或在早生长阶段期间使用了 N 化肥的多数时,匹配庄稼需求。我们因此开发了同时增加谷物产量和 NUE 的综合土壤庄稼系统管理策略。 | MENG Qingfeng YUE Shanchao HOU Peng CUI Zhenling CHEN Xinping | 2016 | Pedosphere2016,26,2: | 51 |
| 2 | Risk factors for cervical lymph node metastasis in papillary thyroid microcarcinoma: a study of 1,587 patients显示文摘Objective: The purposes of this study were to identify risk factors for cervical lymph node metastasis and to examine the association between BRAF^(V600E) status and clinical features in papillary thyroid microcarcinoma(PTMC).Methods: A total of 1,587 patients with PTMC, treated in Tianjin Medical University Cancer Institute and Hospital from January2011 to March 2013, underwent retrospective analysis. We reviewed and analyzed factors including clinical results, pathology records, ultrasound results, and BRAF^(V600E) status.Results: Multivariate logistic regression analyses demonstrated that gender(male) [odds ratio(OR) = 1.845, P = 0.000], age(< 45 years)(OR = 1.606, P = 0.000), tumor size(> 6 mm)(OR = 2.137, P = 0.000), bilateralism(OR = 2.011, P = 0.000) and extrathyroidal extension(OR = 1.555, P = 0.001) served as independent predictors of central lymph node metastasis(CLNM).Moreover, CLNM(OR = 29.354, P = 0.000) served as an independent predictor of lateral lymph node metastasis(LLNM). Among patients with a solitary primary tumor, those with tumor location in the lower third of the thyroid lobe or the isthmus were more likely to experience CLNM(P < 0.05). Univariate analyses indicated that CLNM, LLNM, extrathyroidal extension, and multifocality were not significantly associated with BRAF^(V600E) mutation.Conclusions: The present study suggested that prophylactic neck dissection of the central compartment should be considered in patients with PTMC, particularly in men with tumor size greater than 6 mm, age less than 45 years, extrathyroidal extension, and tumor bilaterality. Among patients with PTMC, BRAF^(V600E) mutation is not significantly associated with prognostic factors. For a better understanding of surgical management of PTMC and the risk factors, we recommend multicenter research and long-term follow-up. | Xiangqian Zheng Chen Peng Ming Gao Jingtai Zhi Xiukun Hou Jingzhu Zhao Xi Wei Jiadong Chi Dapeng Li Biyun Qian | 2019 | Cancer Biology & Medicine2019,16,1: | 54 |
| 3 | Single-cell triple omics sequencing reveals genetic, epigenetic, and transcriptomic heterogeneity in hepatocellular carcinomas显示文摘 | Yu Hou Huahu Guo then Cao Xianlong Li Boqiang Hu Ping Zhu Xinglong Wu Lu Wen FuchouTang Yanyi Huang Jirun Peng | 2016 | Cell Research2016,26,3: | 48 |
| 4 | Comparative Study between Robotic Total Thyroidectomy with Central Lymph Node Dissection via Bilateral Axillo-breast Approach and Conventional Open Procedure for Papillary Thyroid Microcarcinoma显示文摘 | Qing-Qing He Jian Zhu Da-Yong Zhuang Zi-Yi Fan Lu-Ming Zheng Peng Zhou Lei Hou Fang Yu Yan-Ning Li Lei Xiao Xue-Feng Dong Gao-Feng Ni | 2016 | Chinese Medical Journal2016,,18: | 42 |
| 5 | Research progress on reduced lodging of high-yield and-density maize显示文摘Increasing plant density is an effective way to enhance maize yield, but often increases lodging rate and severity, significantly elevating the risk and cost of maize production. Therefore, lodging is a major factor restricting future increases in maize yield through high-density planting. This paper reviewed previous research on the relationships between maize lodging rate and plant morphology, mechanical strength of stalks, anatomical and biochemical characteristics of stalks, root characteristics, damage from pests and diseases, environmental factors, and genomic characteristics. The effects of planting density on these factors and explored possible ways to improve lodging resistance were also analyzed in this paper. The results provide a basis for future research on increasing maize lodging resistance under high-density planting conditions and can be used to develop maize cultivation practices and lodging-resistant maize cultivars. | XUE Jun XIE Rui-zhi ZHANG Wang-feng WANG Ke-ru HOU Peng MING Bo GOU Ling LI Shao-kun | 2017 | Journal of Integrative Agriculture2017,16,12: | 42 |
| 6 | Nitrogen and phosphorus removal in pilot-scale anaerobic-anoxic oxidation ditch system显示文摘完成氮和磷移动的高效率并且调查同时的氮的硝化作用和脱氮磷移动( SNDPR )的规则, SNDPR 损坏和恢复的一堂整个功课在飞行员规模被学习,厌氧--缺氧的氧化阴沟( OD ),在此厌氧的地区的体积, OD 系统的缺氧的地区,和阴沟地区分别地是 7 , 21 ,和 280 L 。反应堆与 336 L/d 的流动率用市政的废水被喂。同时的氮的硝化作用和脱氮(SND ) 的概念率(rSND ) 被提出确定 SND。结果显示那:(1 ) 高氮和磷移动效率在稳定的 SND 阶段,总氮(TN ) 和磷酸盐(TP ) 移动评估的总数期间被完成分别地是 80% 和 85% ;(2 ) 当系统过分地被充气时, SND 的稳定性从 80% ~ 20% 或少些被损坏,并且 rSND 落下;(3 ) 到在自河的 NH4+ 的 NOx 的比率的自然对数有一道线性相关到氧化减小潜力(ORP ) ;(4 ) 什么时候 NO3?是不到 6 mg/L,高磷移动效率能被完成;(5 ) 从磷移动(DNPR ) 能发生在嫌气的,厌气的,厌氧的,缺氧缺氧的 OD 系统。主要革新是 SND 率被设计并且确定。 | PENG Yongzhen HOU Hongxun WANG Shuying CUI Youwei Zhiguo Yuan | 2008 | Journal of Environmental Sciences2008,20,4: | 35 |
| 7 | Satellite lithium-ion battery remaining useful life estimation with an iterative updated RVM fused with the KF algorithm显示文摘Lithium-ion batteries have become the third-generation space batteries and are widely utilized in a series of spacecraft.Remaining Useful Life(RUL) estimation is essential to a spacecraft as the battery is a critical part and determines the lifetime and reliability.The Relevance Vector Machine(RVM) is a data-driven algorithm used to estimate a battery's RUL due to its sparse feature and uncertainty management capability.Especially, some of the regressive cases indicate that the RVM can obtain a better short-term prediction performance rather than long-term prediction.As a nonlinear kernel learning algorithm, the coefficient matrix and relevance vectors are fixed once the RVM training is conducted.Moreover, the RVM can be simply influenced by the noise with the training data.Thus, this work proposes an iterative updated approach to improve the long-term prediction performance for a battery's RUL prediction.Firstly, when a new estimator is output by the RVM, the Kalman filter is applied to optimize this estimator with a physical degradation model.Then, this optimized estimator is added into the training set as an on-line sample, the RVM model is re-trained, and the coefficient matrix and relevance vectors can be dynamically adjusted to make next iterative prediction.Experimental results with a commercial battery test data set and a satellite battery data set both indicate that the proposed method can achieve a better performance for RUL estimation. | Yuchen SONG Datong LIU Yandong HOU Jinxiang YU Yu PENG | 2018 | Chinese Journal of Aeronautics2018,31,1: | 29 |
| 8 | Chemerin and apelin are positively correlated with inflammation in obese type 2 diabetic patients显示文摘 | YU Shan ZHANG Ying LI Mei-zhen XU Hua WANG Qian SONG Jun LIN Peng ZHANG Li LIU Qian HUANG Qing-xian WANG Kun HOU Wei-kai | 2012 | Chinese Medical Journal2012,,19: | 27 |
| 9 | Quantifying driving forces of urban wetlands change in Beijing City显示文摘决定树和阀值方法被采用了描出从 LANDSAT 图象的水身体的边界和特征。在空间覆盖分析以后并且用在北京的一种遥感技术和沼泽地库存数据,水身体视觉上在 1986 在北京的城市的沼泽地上被分类进城市的沼泽地,和数据的不同类型, 1991 , 1996 , 2000 , 2002 , 2004 和 2007 被获得。影响沼泽地变化的 13 辆开车因素被选择,并且灰色的关联分析被采用计算在每个开车因素和城市的沼泽地的全部的区域之间的关联。然后,六个主要开车因素基于关联系数被选择,并且贡献这六个开车因素评价到各种各样的城市的沼泽地的区域变化基于正规关联分析被计算。在那以后,这研究分析了在主要开车因素和沼泽地的各种各样的类型之间的关系和机制。五个结论能被得出。(1 ) 在北京的表面水身体的全部的区域从 1986 ~ 1996 增加了,并且逐渐地从 1996 ~ 2007 减少了。(2 ) 河沼泽地,水存储区域和水池的区域和文化区域逐渐地减少了,并且它的变化趋势与沼泽地的全部的区域的一致。采矿水区域和废水处理植物的区域稍微增加了。( 3 )驱动力的六个因素是年度降雨,蒸发,流入水的数量,可得到的地下水的体积,都市化率和废水的每天平均的分泌物是在沼泽地区域影响变化的主要因素,并且他们与沼泽地的全部的区域相关很好。(4 ) 象流入水和地下水的体积的数量那样的水资源的 hydrologic 指示物是影响沼泽地区域的变化的最重要、直接的驱动力。这些因素有 43.94% 的联合贡献率。(5 ) 象降雨和蒸发那样的气候因素是在沼泽地区域影响变化的外部因素,并且他们有 36.54% 的贡献率。(6 ) 象都市化率和废水的每天平均的数量那样的人的活动是主要人工的开车因素。他们有 19.52% 的影响率。 | JIANG Weiguo WANG Wenjie CHEN Yunhao LIU Jing TANG Hong HOU Peng | 2012 | Journal of Geographical Sciences2012,22,2: | 25 |
| 10 | Severity of sepsisis is correlated with the elevation of serum high-mobility group box 1 in rats显示文摘背景败血是以特别护理单位的死亡的一个领先的原因。晚煽动性的 cytokine,高活动性的组盒子 1 (HMGB1 ) ,在败血起一个关键作用。在现在的学习,我们在 rats.Methods 在 导致lipopolysaccharide 的败血调查了在浆液 HMGB1 层次和器官损害的严厉之间的协会与器官损害的不同的度生产败血的一个动物模型,动物与 lipopolysaccharide 的三不同剂量被对待( 4 , 8 和 16 mg/kg ),并且在控制组的动物与车辆的一样的体积被对待(盐)。浆液 HMGB1 的层次在 lipopolysaccharide ( LPS )或车辆注射以后在 0 , 2 , 4 , 8 , 16 , 24 , 32 和 48 个小时被测量,同时为机关损害的严厉的生物化学、组织病理学说的指示物是 HMGB1 的水平有的 assessed.Results 一积极,与浆液的反常变化的高关联心脏的 troponin ,丙氨酸 aminotransferase , aspartate aminotransferase , creatinine 和血脲氮,以及心,肺,肝和 kidney.Co | HOU Li-chao QIN Ming-zhe ZHENG Li-na LU Yan WANG Qiang PENG Dao-rong YU Xin-ping XIN Yu-chang JI Gen-lin XIONG Li-ze | 2009 | Chinese Medical Journal2009,,4: | 22 |
| 11 | Epidemiological characteristics of thyroid nodules and risk factors for malignant nodules: a retrospective study from 6 304 surgical cases显示文摘 | Huan Qin Wang Kun Lou Fuchen Zhang Li Huang Qingxian Han Yunfeng Sun Hancheng Zhu Lei Lin Peng Song Jun Liu Fuqiang Wang Qian Hou Weikai | 2014 | Chinese Medical Journal2014,,12: | 20 |
| 12 | Effect of transplanted mesenchymal stem cells from rats of different ages on the improvement of heart function after acute myocardial infarction显示文摘 | WANG Yi-qing WANG Miao ZHANG Peng SONG Jing-jin LI Yuan-peng HOU Shu-hong HUANG Cong-xin | 2008 | Chinese Medical Journal2008,,22: | 19 |
| 13 | Renewed profile of the Mesozoic magmatism in Korean Peninsula: Regional correlation and broader implication for cratonic destruction in the North China Craton显示文摘Widespread Mesozoic magmatism occurs in the Korean Peninsula(KP). The status quo is poles apart between the northern and southern parts in characterizing its distribution and nature, with the nearly absence of any related information in North Korea. We have the opportunity to have conducted geological investigations in North Korea and South Korea during the past ten years through international cooperation programs. This led to the revelation of a number of granitoids and related volcanic rocks and thus facilitates the comparison with those in East China and Japan. Mesozoic granitoids in the KP can be divisible into three age groups: the Triassic group with a peak age of ~220 Ma, the Jurassic one of ~190–170 Ma and the late Early Cretaceous one of ~110 Ma. The Triassic intrusions include syenite, calc-alkaline to alkaline granite and minor kimberlite in the Pyeongnam Basin of North Korea. They have been considered to form in post-orogenic settings related to the Central Asian Orogenic Belt(CAOB) or the Dabie-Sulu Orogenic Belt(DSOB). The Jurassic granitoids constitute extensive occurrence in the KP and are termed as the Daebo-period magmatism. They correlate well with coeval counterparts in NE China encompassing the northeastern part of the North China Craton(NCC) and the eastern segment of the CAOB. They commonly consist of biotite or two-mica granites and granodiorites, with some containing small dark diorite enclaves. On one hand, Early Jurassic to early Middle Jurassic magmatic rocks are rare in most areas of the NCC, whilst Middle-Late Jurassic ones are not developed in the KP. On the other hand, both NCC and KP host abundant Cretaceous granites. However, the present data revealed contrasting age peaks, with ~130–125 Ma in the NCC and ~110–105 Ma in the KP. Cretaceous granites in the KP comprise the dominant biotite granites and a few amphibole granites. The former exhibit mildly fractionated REE patterns and zircon εHf(t) values from ?15 to ?25, whereas the latter feature strongly fractionated REE patterns and zircon εHf(t) values from ?10 to ?1. Both granites contain inherited zircons of ~1.8–1.9 or ~2.5 Ga. These geochemical characters testify to their derivation from re-melting distinct protoliths in ancient basement. Another Cretaceous magmatic sub-event has been entitled as the Gyeongsang volcanism, which is composed of bimodal calc-alkaline volcanic rocks of 94–55 Ma and granitic-hypabyssal granitic bodies of 72–70 Ma. Synthesizing the Mesozoic magmatic rocks across the KP, NCC and Japan can lead to the following highlights:(1) All Triassic granites in the NCC, KP and Japan have similar characteristics in petrology, chronology and geochemistry. Therefore, the NCC, KP and Japan tend to share the same tectonic setting during the Triassic, seemingly within the context of Indosinian orogensis.(2) Jurassic to earliest Cretaceous magmatic rocks in the NCC seem to define two episodes: episode A from 175 to 157 Ma and episode B from 157 to 135 Ma. Jurassic magmatic rocks in the KP span in age mainly from 190 to 170 Ma, whereas 160–135 Ma ones are rare. With the exception of ~197 Ma Funatsu granite, Jurassic magmatic rocks are absent in Japan.(3) Cretaceous granites in the KP have a peak age of ~110, ~20 Ma younger than those in the NCC, while Japan is exempt from ~130–100 Ma granites.(4) The spatial-temporal distribution and migratory characteristics of theJurassic-Cretaceous magmatic rocks in Japan, KP, and NE China-North China indicate that the subduction of the Paleo-Pacific plate might not be operative before Late Cretaceous(~130–120 Ma).(5) Late Cretaceous magmatic rocks(~90–60 Ma) occur in the southwestern corner of the KP and also in Japan, coinciding with the metamorphic age of ~90–70 Ma in the Sanbagawa metamorphic belt of Japan. The magmatic-metamorphic rock associations and their spatial distribution demonstrate the affinities of sequentially subduction zone, island arc and back-arc basin from Japan to Korea, arguing for the Pacific plate subduction during Late Cretaceous.(6) This study raises another possibility that the Mesozoic cratonic destruction in the NCC, which mainly occurred during ~150–120 Ma, might not only be due to the subduction of the Paleo-Pacific Plate, but also owe much to the intraplate geodynamic forces triggered by other adjacent continental plates like the Eurasian and Indian plates. | ZHAI MingGuo ZHANG YanBin ZHANG XiaoHui WU Fu Yuan PENG Peng LI Qiu Li HOU QuanLin LI TieSheng ZHAO Lei | 2016 | Science China(Information Sciences)2016,59,12: | 16 |
| 14 | Effect of alkalinity on nitrite accumulation in treatment of coal chemical industry wastewater using moving bed biofilm reactor显示文摘Nitrogen removal via nitrite(the nitrite pathway) is more suitable for carbon-limited industrial wastewater. Partial nitrification to nitrite is the primary step to achieve nitrogen removal via nitrite. The effect of alkalinity on nitrite accumulation in a continuous process was investigated by progressively increasing the alkalinity dosage ratio(amount of alkalinity to ammonia ratio, mol/mol). There is a close relationship among alkalinity, pH and the state of matter present in aqueous solution. When alkalinity was insufficient(compared to the theoretical alkalinity amount), ammonia removal efficiency increased first and then decreased at each alkalinity dosage ratio, with an abrupt removal efficiency peak. Generally, ammonia removal efficiency rose with increasing alkalinity dosage ratio. Ammonia removal efficiency reached to 88% from 23% when alkalinity addition was sufficient. Nitrite accumulation could be achieved by inhibiting nitrite oxidizing bacteria(NOB) by free ammonia(FA) in the early period and free nitrous acid in the later period of nitrification when alkalinity was not adequate. Only FA worked to inhibit the activity of NOB when alkalinity addition was sufficient. | Baolin Hou Hongjun Han Shengyong Jia Haifeng Zhuang Qian Zhao Peng Xu | 2014 | Journal of Environmental Sciences2014,26,5: | 16 |
| 15 | Experimental studies on the Danxia landscape morphogenesis in Mt. Danxiashan, South China显示文摘Danxia 风景的形成太慢,不能在我们的生活时间被遵守, Danxia 风景在发展了的古气候与礼品显著地不同。因此,这研究采用了试验性的途径在丹克萨尚山,在各种各样的风景形态学的形成上检验 lithological 和 paleoclimatic 控制华南。122 件岩石样品的一个总数从象白点那样的 Danxia 风景形态学的一个范围被收集,通过洞,蜂房洞,水平沟,自然的桥,石头支柱,和鳞石头小、大。分析镇定样品在实验的不同类型被进行,包括测试的单轴的机械力量;对硫磺的酸侵蚀摇抵抗,结冰,并且融化;X 光检查荧光 spectrometry (XRF ) 分析;诱导地联合的血浆团 spectrometry (ICPMS ) 分析;并且在一台极化的显微镜下面的鉴定分析。结果显示各种各样的 Danxia 风景形态学的形成能源于至少一个下列过程:微分侵蚀由于 lithological 差别,化学溶解和再结晶,结冰并且融化的行动,酸腐蚀,河流动的捱过的、侧面的侵蚀,并且构造高举。在潮湿的季风气候和在第四级的冰川的阶段和间冰期的阶段的行动的集中的结冰并且融化的引申的水侵蚀能在 Danxia 风景地形学的形成上有大影响。 | ZHU Cheng WU Li ZHU Tongxin HOU Rongfeng HU Zhinong TAN Yan SUN Wei JIA Tianjiao PENG Hua | 2015 | Journal of Geographical Sciences2015,25,8: | 15 |
| 16 | Biofunctional magnesium coated Ti6Al4V scaffold enhances osteogenesis and angiogenesis in vitro and in vivo for orthopedic application显示文摘The insufficient osteogenesis and osseointegration of porous titanium based scaffold limit its further application.Early angiogenesis is important for scaffold survival.It is necessary to develop a multifunctional surface on titanium scaffold with both osteogenic and angiogenic properties.In this study,a biofunctional magnesium coating is deposited on porous Ti6Al4V scaffold.For osseointegration and osteogenesis analysis,in vitro studies reveal that magnesium-coated Ti6Al4V co-culture with MC3T3-E1 cells can improve cell proliferation,adhesion,extracellular matrix(ECM)mineralization and ALP activity compared with bare Ti6Al4V cocultivation.Additionally,MC3T3-E1 cells cultured with magnesium-coated Ti6Al4V show significantly higher osteogenesisrelated genes expression.In vivo studies including fluorochrome labeling,micro-computerized tomography and histological examination of magnesium-coated Ti6Al4V scaffold reveal that new bone regeneration is significantly increased in rabbits after implantation.For angiogenesis studies,magnesium-coated Ti6Al4V improve HUVECs proliferation,adhesion,tube formation,wound-healing and Transwell abilities.HUVECs cultured with magnesium-coated Ti6Al4V display significantly higher angiogenesis-related genes(HIF-1αand VEGF)expression.Microangiography analysis reveal that magnesium-coated Ti6Al4V scaffold can significantly enhance the blood vessel formation.This study enlarges the application scope of magnesium and provides an optional choice to the conventional porous Ti6Al4V scaffold with enhanced osteogenesis and angiogenesis for further orthopedic applications. | Peng Gao Bo Fan Xiaoming Yu Wenwen Liu Jie Wu Lei Shi Di Yang Lili Tan Peng Wan Yulin Hao Shujun Li Wentao Hou Ke Yang Xiaokang Li Zheng Guo | 2020 | Bioactive Materials2020,5,3: | 15 |
| 17 | Effects of warming and clipping on plant and soil properties of an alpine meadow in the Qinghai-Tibetan Plateau, China显示文摘Climate warming and livestock grazing are known to have great influences on alpine ecosystems like those of the Qinghai-Tibetan Plateau(QTP) in China. However, it is lacking of studies on the effects of warming and grazing on plant and soil properties in these alpine ecosystems. In this study, we reported the related research from manipulative experiment in 2010–2012 in the QTP. The aim of this study was to investigate the individual and combined effects of warming and clipping on plant and soil properties in the alpine meadow ecosystem. Infrared radiators were used to simulate climate warming starting in July 2010, while clipping was performed once in October 2011 to simulate the local livestock grazing. The experiment was designed as a randomized block consisting of five replications and four treatments: control(CK), warming(W), clipping(C) and warming+clipping combination(WC). The plant and soil properties were investigated in the growing season of the alpine meadow in 2012. The results showed that W and WC treatments significantly decreased relative humidity at 20-cm height above ground as well as significantly increases air temperature at the same height, surface temperature, and soil temperature at the depth of 0–30 cm. However, the C treatment did not significantly decrease soil moisture and soil temperature at the depth of 0–60 cm. Relative to CK, vegetation height and species number increased significantly in W and WC treatment, respectively, while vegetation aboveground biomass decreased significantly in C treatment in the early growing season. However, vegetation cover, species diversity, belowground biomass and soil properties at the depth of 0–30 cm did not differ significantly in W, C and WC treatments. Soil moisture increased at the depth of 40–100 cm in W and WC treatments, while belowground biomass, soil activated carbon, organic carbon and total nitrogen increased in the 30–50 cm soil layer in W, C and WC treatments. Although the initial responses of plant and soil properties to experimental warming and clipping were slow and weak, the drought induced by the downward shift of soil moisture in the upper soil layers may induce plant belowground biomass to transfer to the deeper soil layers. This movement would modify the distributions of soil activated carbon, organic carbon and total nitrogen. However, long-term data collection is needed to further explain this interesting phenomenon. | Man Hou XU Fei PENG Quan Gang YOU Jian GUO Xia Fei TIAN Min LIU Xian XUE | 2015 | Journal of Arid Land2015,7,2: | 14 |
| 18 | Understanding hydraulic fracture propagation behavior in tight sandstone–coal interbedded formations: an experimentalinvestigation显示文摘Whether hydraulic fractures could connect multiple gas zones in the vertical plane is the key to fracturing treatment to jointly exploit coalbed methane and tight sandstone gas through integrative hydraulic fracturing in tight sandstone–coal interbedded formations. Laboratory true triaxial hydraulic fracturing experiments were conducted on layered specimens with di erent combination types of natural sandstone and coal to simulate the propagation behavior of hydraulic fractures. The effects of the fracture initiation position, fracturing fluid viscosity and injection rate were discussed. The results showed that di erent fracture morphologies could be found. When initiating from coal seams, three patterns of fracture initiation and propagation were obtained:(1) The main hydraulic fracture initiated and propagated along the natural fractures and then diverged due to the effects of in situ stress and formed secondary fractures.(2) The hydraulic fracture initiated and propagated in the direction of the maximum horizontal stress.(3) Multiple fractures initiated and propagated at the same time. With the same fracturing fluid viscosity and injection rate, the hydraulic fractures initiating in sandstones had greater chances than those in coal seams to penetrate interfaces and enter neighboring layers. Excessively small or large fracturing fluid viscosity and injection rate would do harm to the vertical extension height of the induced fracture and improvement of the stimulated reservoir volume. Compared with operation parameters(fracturing fluid viscosity and injection rate), the natural weak planes in coals were considered to be the key factor that a ected the fracture propagation path. The experimental results would make some contributions to the development of tight sandstone–coal interbedded reservoirs. | Peng Tan Yan Jin Liang Yuan Zhen-Yu Xiong Bing Hou Mian Chen Li-Ming Wan | 2019 | Petroleum Science2019,16,1: | 14 |
| 19 | Optimizing integrative cultivation management improves grain quality while increasing yield and nitrogen use efficiency in rice显示文摘A major challenge in rice(Oryza sativa L.)production is to cope with increasing grain yield and fertilizer use efficiency without compromising grain quality.This study was designed to determine if optimizing integrative cultivation management in rice could improve grain quality while increase yield and nitrogen use efficiency(NUE).An indica-japonica hybrid rice cultivar and a japonica rice cultivar were grown in the field,with five cultivation managements including no N application(0 N),local farmer's practice(LFP),and three optimizi ng in teg rati ve cultivati on managements,reducing N rate and increasi ng plant density(ND),ND+alternate wetting and moderate soil drying irrigation(NDW),and NDW+applying rapeseed cake fertilizer(NDWR).The results showed that the optimizi ng integrative cultivati on man ageme nts could not only in crease grain yield,but also enhance NUE compared to LFP.Compared to LFP,NDWR sign ifica ntly in creased brow n,milled,head milled rice rate,ratio of the kern el le ngth to breadth and breakdown value of starch,whereas decreased amylose content,gel consiste ncy,prolamin con tent,setback value,perce ntage of chalky kern els,and chalki ness.The three optimizing in tegrative cultivation managements increased con tents of total protei ns,albumin and glutelin,activities of the key enzymes involved in the sucrose-starch con version in grains,root oxidati on activity,and malic and succinic acid concentrations in root exudates during the grain-filling period.The results suggested that optimizing integrative cultivation managements could improve grain quality meanwhile increase grain yield and NUE by enhancing physiological activities of rice plants. | ZHANG Hao HOU Dan-ping PENG Xian-long MA Bing-ju SHAO Shi-mei JING Wen-jiang GU Jun-fei LIU Li-jun WANG Zhi-qin LIU Yuan-ying YANG Jian-chang | 2019 | Journal of Integrative Agriculture2019,18,12: | 14 |
| 20 | Cigarette Smoking Increases Risk for Incident Metabolic Syndrome in Chinese Men—Shanghai Diabetes Study显示文摘Objective To determine whether smoking increases the risk for developing metabolic syndrome (MetS) in Chinese men.Methods A total of 693 men with no MetS at baseline were followed for 2.9‐5.5 years.Subjects were divided into nonsmokers,ex‐smokers,and current smokers according to baseline smoking status.Results After adjusting for age,education level,alcohol intake,fasting plasma insulin,HOMA‐IR index,and BMI at baseline and weight change,current smokers were dose‐dependently associated with increased risk for developing new MetS compared with nonsmokers.The odds ratio (OR) was 2.131 (95% CI,1.264,3.592;P<0.01) for the NCEPIII definition or 3.083 (95% CI,1.807,5.295;P<0.01) for the JCDCG definition of MetS.Ex‐smokers who had quit for ≥13 years significantly decreased the risk for developing new MetS defined by the JCDCG definition.Compared with nonsmokers,current smokers were significantly associated with increased incidence of hypertriglyceridemia and low HDL‐C.Conclusion Smoking is a risk factor for developing MetS in Chinese men after adjusting for age,education level,alcohol intake,fasting plasma insulin,HOMA‐IR,BMI,and weight change.This could be due to an increased incidence of dyslipidemia.Smoking cessation for >13 years decreased the risk for developing MetS defined by the JCDCG definition. | ZHU YunXia ZHANG MingLiang HOU XuHong LU JunXi PENG LiangPu GU HuiLin WANG Chen JIA WeiPing | 2011 | Biomedical and Environmental Sciences2011,24,5: | 13 |