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Objective To explore the effect of acupoint application of Xiefu prescription on prevention of functional constipation in long-term bedridden patients with pelvic fracture. Methods A total of 60 patients with pelvic fracture without abnormal defecation function and constipation main symptom score ≤3 were selected and randomly divided into two groups: 30 patients in the control group received routine prevention and nursing measures, and 30 patients in the treatment group received acupoint application of Xiefu prescription based on the routine nursing interventions. The main symptoms of constipation were scored on the day of admission, the 7th and 14th day of bed rest, and the intervention of various assisted defecation measures within 14 days of bed rest was recorded. Results The total score of Main Constipation Symptoms Scale in the treatment group was lower than that in the control group on the 7th and 14th day of bed rest, respectively(P＜0. 01); On the 14th day of bed rest, the scores of stool, difficulty in defecation, defecation duration, defecation frequency and abdominal distension in the treatment group were lower than those in the control group(P＜0. 01). During the 14 days of bed rest, the number of assisted defecation interventions in the treatment group was less than that of the control group (P＜0. 01) . Conclusion Acupoint application of Xiefu prescription and sticking therapy has a good preventive effect on functional constipation in long-term bedridden patients with pelvic fracture. It is an effective traditional Chinese medicine treatment technology, which is worthy of popularization and application. (目的 探讨泻腑贴方穴位贴敷对长期卧床单纯骨盆骨折患者功能性便秘的预防效果。方法 选取既往排便功能无异常且便秘主要症状评分≤3分的单纯骨盆骨折患者60例, 随机分为两组: 对照组(n=30)接受便秘常规预防护理, 治疗组(n=30)在对照组基础上增加泻腑贴方穴位贴敷。于入院当天、卧床第7、14天, 记录便秘主要症状评分, 并记录卧床14d内辅助排便措施介入情况。结果 卧床第7、14天治疗组便秘主要症状总分低于对照组, 差异有统计学意义(P＜0. 01); 卧床第14天治疗组粪便性状、排便费力、排便时间、下坠/不尽/胀感、排便频率、腹胀条目得分低于对照组, 差异有统计学意义(P

To investigate the characteristics of elements in selenium and cadmium rich soil and the ecological risk of local agricultural products in the typical heavy metal high background area of Chongqing,Taking the Se and Cd enriched soil in study area as a research object, The effects of Cd and Se on agricultural products were studied by collecting and analyzing the element contents and available contents of soil and agricultural products samples, The results showed that The pH value of soil in the study area is 6.89 ~ 8.22, which is alkaline and rich in organic matter; The study area belongs to the typical high background area of heavy metals. The content of Cd in the soil is 0.52 ~ 1.84 mg·kg-1, the average value is 1.26 mg·kg-1, the content of se is 0.41 ~ 0.77 mg·kg-1, the average value is 0.64 mg·kg-1, and its element characteristics are rich in selenium and cadmium; The activation rates of Cd and Se were 6.63 ~ 28.26% and 0.17 ~ 1.58% respectively; The concentration of Cd and Se in the soil of the study area may be mainly from the parent material of soil, and it is closely related to the content of organic matter in the soil. The local agricultural products are less affected by the high background value of heavy metals in the soil, and there is no excessive Cd in the agricultural products, among which potatoes and sweet potatoes have reached the standard of selenium enrichment. The research suggests that the soil rich in selenium and cadmium in the study area may come from the soil parent material, which is caused by the natural geological background and closely related to the content of organic matter in the soil. The activation rate of Cd and Se in the soil is low, which has little impact on the ecological risk of local agricultural products. This paper has important guiding significance for the development and utilization of selenium-rich soil resources in typical heavy metal high background areas.

Carbon sequestration refers to the technology of capturing carbon and storing it safely instead of directly discharging CO2 into the atmosphere. Rock salt is a promising CO2 reservoir, and the underground rock salt structure formed by salt cavern reservoirs in geological history has a natural sealing function. Storing carbon dioxide in salt caves can ensure that carbon dioxide is stably stored underground for a long time. However, at present, there are few studies on carbon sequestration in abandoned salt caves. This study analyses the characteristics of carbonate-evaporite strata in the high fold zone of eastern Sichuan and qualitatively evaluates Triassic carbonate-evaporite layers formed in the depth range of 800-3000 m in various sedimentary basins in Chongqing. A large set of carbonates-evaporites are developed in Chongqing, and the carbonate rocks near evaporites have low porosity and permeability, which can be used as CO2 storage caprock in salt cavities. Thick evaporated strata can also provide a good cover for CO2 storage in abandoned salt caves, which has great potential space resources.

Hybrid metal halides are an extraordinary class of optoelectronic materials with extensive applications. To further diversify and study the in‐depth structure‐property relations, we report here a new family of 21 zero‐dimensional hybrid bimetallic chlorides with the general formula A(L)n[BClm] (A=rare earth (RE), alkaline earth metals and Mn; L=solvent ligand; and B=Sb, Bi and Te). The RE(DMSO)8[BCl6] (RE=La, Ce, Sm, Eu, Tb, and Dy; DMSO=dimethyl sulfoxide) series shows broadband emission attributed to triplet radiative recombination from Sb and Bi, incorporating the characteristic emission of RE metals, where Eu(DMSO)8[BiCl6] shows a staggering PL quantum yield of 94 %. The pseudo‐octahedral [SbCl5] with Cl vacancy in AII(DMSO)6[SbCl5] (AII=Mg, Ca and Mn) and the square pyramidal [SbCl5] in AII(TMSO)6[SbCl5] (TMSO=tetramethylene sulfoxide) enhance the stereoactive expression of the 5 s2 lone pairs of Sb3+, giving rise to the observation of dual‐band emission of singlet and triplet emission, respectively. A series of Te(IV) analogues have been characterized, showing blue‐light‐excitable single‐band emission. This work expands the materials space for hybrid bimetallic halides with an emphasis on harnessing the RE elements, and provides important insights into designing new emitters and regulating their properties. [ABSTRACT FROM AUTHOR]

0D organic–inorganic antimony halides have attracted increasing attention due to the non‐toxicity, high stability, and superior photoluminescence quantum yield (PLQY). Here, a series of hybrid antimony chlorides with the same organic cation ethyltriphenylphosphonium (Ph3EtP+), including non‐emissive (Ph3EtP)2Sb2Cl8 and nine (Ph3EtP)2SbCl5‐based emissive compounds, are synthesized and characterized. These emissive compounds are namely, the guest‐free (Ph3EtP)2SbCl5 and (Ph3EtP)2SbCl5·guest (guest = glycol, acetic acid, methanol, ethanol, n‐propanol, i‐propanol, acetone, and acetonitrile). The solvent used can alter the coordination mode of Sb because the solvation effect affects the reactivity of the anions ([SbCl4]− and Cl−), leading to the formation of either A2Sb2Cl8 or A2SbCl5. The solvents can be even incorporated into the crystal structure, where stronger interaction with [SbCl5]2− leads to higher temperature of the escape of the solvent. The guest molecules could increase the structural rigidity of [SbCl5]2− via hydrogen bonding and dipole–dipole interactions, which tends to reduce the room‐temperature photoluminescence (PL) Stokes shift and temperature‐dependent PL shift by decreasing the [SbCl5]2− deformability, along with enhanced PLQY from 81% in guest‐free to near‐unity in (Ph3EtP)2SbCl5·glycol. This work shows that targeted synthesis and diversified choices of solvents provide an efficient tool to generate steady variations in hybrid emissive materials for optoelectronics. [ABSTRACT FROM AUTHOR]

Low-dimensional metal halide perovskites are attracting extensive attention due to their enhanced quantum confinement and stability compared to three-dimensional perovskites. However, low dimensional connectivity in the inorganic frameworks leads to strongly bounded excitons with limited absorption properties, which impedes their application in photovoltaic devices. Here, we show that, by incorporating a strong electron accepting methylviologen cation, charge transfer (CT) at the organic/inorganic interface can effectively tune the optical properties in one-dimensional (1D) lead–halide perovskites. Both 1D MVPb2I6 and MVPb2Br6 display expanded absorption and photoresponse activity compared to CT inactive cations. The photoinduced CT process in MVPb2I6 was further characterized by transient absorption spectroscopy, which shows an ultrafast CT process within 1 ps, generating charge separated states. Our work unveils the interesting photophysics of these unconventional 1D perovskites with functional organic chromophores. [ABSTRACT FROM AUTHOR]

A large area of soil in China is deficient in selenium (Se) and zinc (Zn)，meanwhile, Se and Zn are essential trace elements for human body, so it is of great significance to find Se and Zn rich soil to cultivate crops. Based on the data of Se and Zn in topsoil, crops and root soil obtained from 1:50000 land quality geochemical survey, this paper taking the western area of Fuling in Chongqing as the research area, studies the content and spatial distribution characteristics of Se and Zn in soil and crops, and analyzes the enrichment law of Se and Zn in agricultural crops. The results show that the average values of Se and Zn in the topsoil of the study area are 0.265mg/kg and 77.56mg/kg respectively. There are some differences in the contents of Se and Zn in different geological backgrounds, soil parent materials and soil types. The high value areas of Se and Zn are mainly distributed in the exposed areas of Triassic carbonate; in the study area, the average contents of Se and Zn in maize seeds are 0.029mg/kg and 20.752mg/kg respectively, and the enrichment rates are 96% and 82% respectively. The average contents of Se and Zn in rice seeds are 0.032mg/kg and 11.463mg/kg respectively, and the enrichment rates are 13.3% and 5% respectively. The bioaccumulation coefficients of Se and Zn in maize are higher than that in rice, and the availability of Se and Zn elements in maize root soil is higher.The results can provide geochemical basis for developing characteristic land resources, functional agriculture and promoting rural revitalization in Fuling District.