Analysis on Characteristics in Quanyou Series of High-quality Mid-season Rice Varieties Suitable for Planting in Hubei Province

In this paper,the basic characteristics of Quanyou series of high-quality rice varieties,suitable for planting in Hubei ecological areas(except Wuling Mountain Area)and approved by the provincial government in 2020,were analyzed.The result showed that,there were 12 suitable rice varieties.From the perspective of the main body of variety breeding,the varieties were mainly selected by enterprises;Quanyou series of high-quality hybrid combinations generally had large grains per panicle and high seed setting rate,but the effective panicle number was general,and the yield per panicle contributed more in unit yield.Quanyou series of high-quality hybrid combinations can be used for the selection and breeding of varieties with good rice quality and blast resistance,but breeding varieties resistant to bacterial blight and brown planthopper should be strengthened.

降雨作用下煤系地层高速公路路堑边坡滑坡成因及稳定性研究

为研究降雨对煤系地层路堑边坡稳定性影响,以晴兴高速K16滑坡为例,通过工程地质调绘、钻探等手段查明滑坡基本特征,采用数值模拟计算分析,研究降雨入渗对滑坡作用机理及稳定性影响。结果显示,降雨入渗是引发滑坡失稳的关键诱因,滑坡前、后缘的孔隙水压力随降雨持续而增大,整体呈“S”形,滑坡中部受地形、地质条件影响,孔隙水压力呈缓慢增长趋势;滑坡稳定型系数随降雨持时的增加而不断降低,并在后期呈现快速下降趋势。

桐梓河特大桥桐梓岸岸坡稳定性数值模拟研究

在查明桥区工程地质条件的基础上,基于强度折减法(SRM)理论,运用Midas GTS、UDEC6.0计算软件构建岸坡数值模拟模型,分析岸坡在各工况条件下的稳定性;在此基础上,进一步研究外部荷载作用下岸坡结构面发育特征及主塔下部隐伏岩溶对桥梁主塔变形的影响,针对该岩溶病害提出处治措施,并评价其治理效果。结果表明:岸坡在各工况条件下稳定性均满足边坡安全控制标准;桥梁主塔已避开结构面发育带;主塔采用桩基穿越隐伏岩溶后岩土体变形满足特大桥变形控制要求。相关岸坡分析、评价思路可为同类工程提供借鉴及参考。

Neogene faulting and volcanism in the Victoria Land Basin of the Ross Sea, Antarctica

The Neogene Terror Rift in the Antarctic Victoria Land Basin(VLB)of the Ross Sea,Antarctica,is composed of the Discovery Graben and the Lee Arch.Many Neogene volcanoes are aligned in the north-south direction in the southern VLB,belonging to the McMurdo Volcanic Group.However,due to multiple glaciations and limited seismic data,the volcanic processes are still unclear in the northern VLB,especially in the Terror Rift.Multichannel seismic profiles were collected at the VLB from the 32nd Chinese National Antarctic Research Expedition(CHINARE).We utilized four seismic profiles from the CHINARE and additional historical profiles,along with gravity and magnetic anomalies,to analyze faults and stratigraphic characteristics in the northern Terror Rift and volcanism in the VLB.Negative flower structures found in the northern Terror Rift suggest that the Terror Rift was affected by dextral strike-slip faults extending from the northern Victoria Land(NVL).After the initial orthogonal tension,the rift transited into an oblique extension,forming a set of downward concaving normal faults and accommodation zones in the Terror Rift.On the Lee Arch,several imbricated normal faults formed and converged into a detachment fault.Under gravitational forces,the strata bent upward and formed a rollover anticline.Many deep faults and thin strata subjected to erosion facilitated volcanic activity.A brittle volcanic region in the VLB was affected by dextral strike-slip movements and east-west extension,resulting in two Neogene volcanic chains that connect three igneous provinces in the VLB:the Hallett,Melbourne,and Erebus Provinces.These two chains contain mud volcanoes with magnetic nuclei,volcanic intrusions,and late-stage volcanic eruptions.Volcanisms have brought about opposite polarities of magnetic anomalies in Antarctica,indicating the occurrence of multiple volcanic activities.

Recent Advances in Organic Photocatalysts for Solar Water Splitting

Facing the current energy crisis and climate change,the discovery of robust yet inexpensive photocatalysts that harvest solar energy for overall water splitting is highly desirable.Recently,organic materials have attracted much attention in photocatalysis,attributed to their facile molecular-level functionalization,adjustable optoelectronic properties,favorable chemical robustness,and lesser environmental hazards as compared with their inorganic counterparts.This minireview highlights the recent advances of organic photocatalysts in the field of solar water splitting.The challenges,opportunities,and future perspectives within the field are discussed to inspire future research studies into organic-based photocatalytic water splitting.

Optimum Location of Tube Blank in Electromagnetic Bulging

Using analytical method, this paper gets 'the mutual inductance between coil and workpiece in tube blank electromagnetic bulging. According to this, we obtain the optimum locations of tube blank with different length of coil and workpiece. There is a good agreement between results calculated and the experimental data.

Boost photothermal theranostics via self-assembly-induced crystallization(SAIC)

Owing to the intrinsic advantages of spatiotemporal selectivity,photothermal theranostics have become the advancing edge of precision medicine for cancer.Developing photothermal transduction agents(PTAs)with near-infrared(NIR)absorption,high photothermal conversion efficiency,robust photothermal stability,and good accumulation in tumors,is particularly valuable.Herein,we report a new concept,self-assembly-induced crystallization(SAIC),which can serve as a mechanism that dramatically boosts photothermal behaviors of PTA in NIR region.As a proof of concept,three heptamethine cyanine molecules with internal degrees of freedom(geometry and intramolecular interaction)are designed to fine-tune their crystallinity.Notably,Cy7-TCF-EMBI molecules with rigid and planar skeletons self-assemble into a crystalline state to maximize their packing density and improve the charge transfer,both of which contribute to nonradiative decay for energy dissipation as heat.The high packing density also renders an ideal scaffold for controlling intermolecular interactions to exhibit better photothermal stability,and endows an anisotropic three-dimensional architecture for passive tumor targeting.This“SAIC”strategy may offer a conceptually novel,practically simple but effective approach to unveil the structure–property relationship that could provide some general rules in rational design of PTAs,and paves the way for a next generation of supramolecular medicine for photothermal theranostics.

Organoid technology for tissue engineering

For centuries,attempts have been continuously made to artificially reconstitute counterparts of in vivo organs from their tissues or cells.Only in the recent decade has organoid technology as a whole technological field systematically emerged and been shown to play important roles in tissue engineering.Based on their self-organizing capacities,stem cells of versatile organs,both harvested and induced,can form 3D structures that are structurally and functionally similar to their in vivo counterparts.These organoid models provide a powerful platform for elucidating the development mechanisms,modeling diseases,and screening drug candidates.In this review,we will summarize the advances of this technology for generating various organoids of tissues from the three germ layers and discuss their drawbacks and prospects for tissue engineering.