, 2001 为配合三峡库区文物考古的抢救性发掘工作,1998年冬,厦门大学考古队(由两名老师和96级考古专业14名本科生组成)在巴东县沿渡河镇(原罗溪坝乡)罗坪村棕杨树槽(俗称蔡家包)遗址进行发掘和钻探,并于罗坪猪脑壳包墓地抢救清理两座墓葬。其中一座破坏严重 ...
吴诗池
core
Shuitu Baochi Xuebao, 2004 通过采集39个样本,调查研究了重庆市1998～2002年化肥使用与残留的分布特征。重庆市化肥全年使用水平为317.08 km/hm~2,高于全国平均水平。都市发达圈水平最高达758.24 km/hm~2,是渝西走廊的2倍。按施肥量水平则分为高施肥量区、中施肥量区、低施肥量区。施肥量水平与粮食产出、种植业经济产出呈明显的负相关性,施肥量越高,其投入效率越低,呈现出明显的报酬递减规律。化肥当季使用水平(x)与粮食产量(y)之间的关系为一抛物线方程。化肥平均利用率为35.72％,其中高施肥量区域最低,只有32.
欧阳柬 陈玉成 严素定
doaj
Shuitu Baochi Xuebao[目的] 径流在气候变化和人类活动的共同影响下发生变化,探索径流时空演变规律及其原因对水库科学调度及水资源的可持续利用具有重要指导意义。[方法] 基于三峡库区"腹心"万州段1960—2019年的气象水文数据,首先采用Mann-Kendall趋势检验、Pettitt突变分析和小波分析对三峡库区蓄水前后径流的时空演变特征进行分析,最后采用2种Budyko水热耦合平衡方程,定量计算气候变化和人类活动对径流变化的影响率。[结果] (1)研究区年径流量呈显著下降趋势(|z|＞2.58),2003年(三峡库区蓄水年)
陈蒙恩 +4 more
doaj
[Prokaryotic expression of a recombinant protein of adeno-associated virus capsid conserved regions and preparation of its polyclonal antibody]. [PDF]
Nan Fang Yi Ke Da Xue Xue Bao, 2022 Li S +8 more
europepmc +1 more source
Controlling influence of the “perched water structure” on rainfall-induced landslide: A case study of the Yaogou landslide in Zhushan County, Hubei Province [PDF]
The Yaogou landslide, located in Zhushan County, Hubei Province, exhibits distinctive aquifer characteristics and varying permeability, leading to the retention of groundwater within the landslide after rainfall, forming confined water.
Lihua LI +3 more
core +1 more source
[Clinical features of Epstein-Barr virus infection associated to liver injury in adolescents and adults]. [PDF]
Zhonghua Gan Zang Bing Za Zhi, 2021 Xu JH, Yu YY, Xu XY.
europepmc +1 more source
Deformation characteristics and treatment measures of dangerous rock collapse in an expressway in Chongqing [PDF]
In this paper, five dangerous rockfall collapses at K1515 of the Shanghai-Chengdu expressway are taken as the research object. Through investigation, statistics, and analysis, the engineering geological conditions and developmental deformation ...
Hongwei LI, Qianyi ZHANG, Xiaogang CHEN
core +1 more source
Mudstone swelling characteristics and key interface response under water immersion [PDF]
The swelling of clay mineral-rich mudstones upon water exposure is a critical factor contributing to various geological hazards. However, there remains a lack of in-depth investigation into the microscopic and macroscopic response mechanisms of clay ...
Changdong LI +4 more
core +1 more source
[Effectiveness of transoral endoscopic thyroid surgery for lymph node dissection in the central region of thyroid cancer]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2022 Wang D +5 more
europepmc +1 more source
, 2003 在古代峡江地区人文聚落发展、变迁的过程中,内地的汉民人口持续迁入起着至关重要的作用。本文从最新考古调查与发掘余家嘴文化遗存的时空分布入手,揭示出各历史时期人文群落的形成、变迁,受人口、长江航运及社区经济发展因素的影响 ...
钟礼强
core