206 research outputs found
Research on the Competitiveness and Trade Potential of China-India Pharmaceutical Trade under the One Belt and One Road Initiative
The implementation of One Belt And One Road initiative brings both opportunities and challenges for China to strengthen the pharmaceutical trade cooperation with India. Based on the data of pharmaceutical products trade from 2001 to 2018, this paper examines the pharmaceutical trade competition between China and India, establishes an expanded trade gravity model between China and countries along the One Belt And One Road Initiative, and measures the export potential of Chinese pharmaceutical products to India. The results show that China\u27s pharmaceutical trade volume to India is positively affected by GDP of the two countries, Indian population and language, and negatively affected by distance. China\u27s pharmaceutical export trade potential to India as a whole belongs to potential reshape type. It is urgent need for the two countries to further strengthen trade cooperation in pharmaceutical products in the context of the global spread of Covid-19 pandemic. Finally, the countermeasures and suggestions to promote the development of China-India pharmaceutical trade are put forward
Sandy Soil Improvement through Microbially Induced Calcite Precipitation (MICP) by Immersion
The goal of this article is to develop an immersion method to improve the microbially induced calcite precipitation (MICP) treated samples. A batch reactor was assembled to immerse soil samples into cementation media. The cementation media can freely diffuse into the soil samples in the batch reactor instead of cementation media being injected. A full contact flexible mold, a rigid full contact mold, and a cored brick mold were used to prepare different soil sample holders. Synthetic fibers and natural fibers were selected to reinforce the MICP-treated soil samples. The precipitated CaCO3 in different areas of the MICP-treated samples was measured. The CaCO3 distribution results demonstrated that the precipitated CaCO3 was distributed uniformly in the soil sample by the immersion method
Analisis Anteseden Orientasi Pasar Dan Pengaruhnya Terhadap Pembelajaran Organisasi UMKM Di Eks Karesidenan Surakarta
The weakness of leaders in Small and Medium Business (UKM) in Indonesia dealing with market oriented are the low motivation of entrepreneurs, the low of leader commitment to apply market orientedmethod in his organization, and lack of training for themselves (Suliyanto, 2011). This research aimed to develop the culture of market oriented throughout the learning of organization that be done by examining the effect of customers and competitorsoriented to the learning of organization. Respondents of this research are 300 owners or managers of UKM in the Greater of Surakarta. The technique of sampling in this research is purposive sample who has two criteria; an Indonesian and at least has two employees. The technique of analysis was done by Structural Equation Model (SEM). The result of this research shows antecedent variable; entrepreneurs\u27 orientation, under-pressured of managers, training programs, and reward system has effect to customer orientation in Small and Medium Business (UKM)
Complete mitochondrial genome sequence and phylogenetic analysis of Procambarus clarkii and Cambaroides dauricus from China
To enhance the management and protection of crayfish genetic diversity and germplasm resources in Cambaroides dauricus (C. dauricus), a common species of Procambarus clarkii (P. clarkii) was used as a control group to compare the whole mitochondrial genome sequence using Illumina sequencing technology. This study found that the mitochondrial genome of C. dauricus is 15580 bp in length, with a base composition of A (31.84%), G (17.66%), C (9.42%), and T (41.08%) and a C + G content of 27.08%. The C + G in the D-loop is rich in 17.06%, indicating a significant preference. The mitochondrial genome of C. dauricus contains 13 protein-coding genes, 22 tRNA genes, and 2 rRNA genes, with most of the genes labeled in the negative direction, except for a few genes that are labeled in the positive direction. The start codons of the ten coding sequences are ATG, and the quintessential TAA and TAG are the stop codons. This study also found that the Ka/Ks ratios of most protein-coding genes in the mitochondria of both shrimps are lower than 1, indicating weak natural selection, except for nad 2, nad 5, and cox 1. The Ka/Ks ratio of cox 3 is the lowest (less than 0.1), indicating that this protein-coding gene bears strong natural selection pressure and functional constraint in the process of mitochondrial genetic evolution of both shrimps. Furthermore, we constructed phylogenetic analyses based on the entire sequence, which effectively distinguishes the high body from other shrimp species of the genus based on the mitochondrial genome. This study provides molecular genetic data for the diversity investigation and protection of fishery resources with Chinese characteristics and a scientific reference for the evolutionary study of Procambarus.This research was funded by the Natural Science Foundation of Heilongjiang Province
(NO. LH2023C058) and the Central Public-interest Scientific Institution Basal Research Fund, Chinese
Academy of Fishery Sciences (NO. 2020TD56)info:eu-repo/semantics/publishedVersio
Materijal od mješavine kenafa i poliestera za unutrašnje uređenje automobila sa svojstvom otpuštanja aniona
Danas, količina automobila u svijetu konstantno raste i ljudi provode više vremena u njima nego prije stoga su mnogi znanstvenici sve više zabrinuti za kvalitetu zraka u unutrašnjosti automobila. Onečišćenje zraka u automobilu uglavnom uzrokuju polimerni materijali koji se koriste za unutrašnje uređenje, odnosno materijali koji se koriste za izradu vrata, ukrasnih tkanina, podnih tepiha i navlaka za sjedala. Ovi su materijali uglavnom proizvedeni od kemijskih vlakana koja otpuštaju štetne plinove kao formaldehid, aceton, dimetilbenzen, i utječu na kvalitetu zraka u ograničenom prostoru automobila. U svrhu rješavanja tog problema i poboljšanja kvalitete zraka u vozilima razvijen je novi materijal za unutrašnje uređenje automobila sa svojstvom otpuštanja aniona od mješabine kenafovih i poliesterskih vlakna niskog tališta s dodatkom anionskog turmalinskog sredstva. Ortogonalna metoda primijenjena je za optimizaciju parametara aniona: materijal se uranja u turmalinsko sredstvo koncentracije 500 g/L dva puta po 20 min. Za analizu količine otpuštanja aniona pod utjecajem različitih faktora korišten je SPSS program te je dobivena sljedeća shema optimiziranog procesa: vruće prešanje na temperaturi od 189,9 oC i pritisak od 5,5 MPa u vremenu od 5,3 min. Ovako proizveden materijal može postići maksimalnu količinu oslobađanja aniona od 14801690 ion/cm-3. Anioni mogu adsorbirati, vezivati i deponirati lebdeće čestice iz zraka, a zbog piezoelektriciteta i piroelektriciteta turmalinskog praha anioni se mogu reciklirati i kontinuirano otpuštati u svrhu poboljšanja kvalitete zraka u unutrašnjosti automobila
Critical Role of Phosphorus in Hollow Structures Cobalt-Based Phosphides as Bifunctional Catalysts for Water Splitting
Cobalt phosphides electrocatalysts have great potential for water splitting, but the unclear active sides hinder the further development of cobalt phosphides. Wherein, three different cobalt phosphides with the same hollow structure morphology (CoP-HS, CoP-HS, CoP-HS) based on the same sacrificial template of ZIF-67 are prepared. Surprisingly, these cobalt phosphides exhibit similar OER performances but quite different HER performances. The identical OER performance of these CoP-HS in alkaline solution is attributed to the similar surface reconstruction to CoOOH. CoP-HS exhibits the best catalytic activity for HER among these CoP-HS in both acidic and alkaline media, originating from the adjusted electronic density of phosphorus to affect absorption–desorption process on H. Moreover, the calculated ΔG based on P-sites of CoP-HS follows a quite similar trend with the normalized overpotential and Tafel slope, indicating the important role of P-sites for the HER process. Moreover, CoP-HS displays good performance (cell voltage of 1.67 V at a current density of 50 mA cm) and high stability in 1 M KOH. For the first time, this work detailly presents the critical role of phosphorus in cobalt-based phosphides for water splitting, which provides the guidance for future investigations on transition metal phosphides from material design to mechanism understanding.W.Z. and N.H. contributed equally to this work. X.Z. and J.F. are grateful for the Research Foundation-Flanders (FWO) project (12ZV320N). Funding from National Natural Science Foundation of China (project No.: 22005250, 21776120, and 51901161) is appreciated. M.X. is grateful to the National Natural Science Foundation of China (project No.: 22179109). W.Z. is grateful to the China Scholarship Council (NO. 201808310068). W.G. is grateful to the China Scholarship Council (NO. 201806030189). S.X. is grateful to the China Scholarship Council. K.W. is grateful to the Oversea Study Program of Guangzhou Elite Project. Funding from the Research Foundation–Flanders (FWO) (project No.: G0B3218N) and Natural Science Foundation of Fujian Province, China (No.: 2018J01433) is acknowledged. ICN2 acknowledges funding from Generalitat de Catalunya 2017 SGR 327 and the Spanish MINECO project ECOCAT and subproject NANOGEN. ICN2 is supported by the Severo Ochoa program from Spanish MINECO (Grant No. SEV-2017-0706) and is funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work has been performed in the framework of Universitat Autònoma de Barcelona Materials Science Ph.D. program. This work has received funding from the European Union's Horizon 2020 Research and Innovation Programme under grant agreement No. 654360 NFFA-Europe. X.H. thanks China Scholarship Council for scholarship support (201804910551)
Three-dimensional controlled growth of monodisperse sub-50 nm heterogeneous nanocrystals
The ultimate frontier in nanomaterials engineering is to realize their composition control with atomic scale precision to enable fabrication of nanoparticles with desirable size, shape and surface properties. Such control becomes even more useful when growing hybrid nanocrystals designed to integrate multiple functionalities. Here we report achieving such degree of control in a family of rare-earth-doped nanomaterials. We experimentally verify the co-existence and different roles of oleate anions (OA-) and molecules (OAH) in the crystal formation. We identify that the control over the ratio of OA- to OAH can be used to directionally inhibit, promote or etch the crystallographic facets of the nanoparticles. This control enables selective grafting of shells with complex morphologies grown over nanocrystal cores, thus allowing the fabrication of a diverse library of monodisperse sub-50 nm nanoparticles. With such programmable additive and subtractive engineering a variety of three-dimensional shapes can be implemented using a bottom-up scalable approach
The Chinese pine genome and methylome unveil key features of conifer evolution
Conifers dominate the world's forest ecosystems and are the most widely planted tree species. Their giant and complex genomes present great challenges for assembling a complete reference genome for evolutionary and genomic studies. We present a 25.4-Gb chromosome-level assembly of Chinese pine (Pinus tabuliformis) and revealed that its genome size is mostly attributable to huge intergenic regions and long introns with high transposable element (TE) content. Large genes with long introns exhibited higher expressions levels. Despite a lack of recent whole-genome duplication, 91.2% of genes were duplicated through dispersed duplication, and expanded gene families are mainly related to stress responses, which may underpin conifers' adaptation, particularly in cold and/or arid conditions. The reproductive regulation network is distinct compared with angiosperms. Slow removal of TEs with high-level methylation may have contributed to genomic expansion. This study provides insights into conifer evolution and resources for advancing research on conifer adaptation and development
Application of Flexible Bronchoscopy in Inhalation Lung Injury
Background: As acute inhalational injury is an uncommon presentation to most institutions, a standard approach to its assessment and management, especially using flexible bronchoscopy, has not received significant attention. Methods: The objective of this study is to evaluate the value of using flexible bronchoscopy as part of the evaluation and management of patients with inhalational lung injury. Twenty-three cases of inhalational lung injury were treated in our three hospitals after a fire in a residential building. The twenty cases that underwent bronchoscopy as part of their management are included in this analysis. After admission, the first bronchoscopy was conducted within 18-72 hours post inhalational injury. G2-level patients were reexamined 24 hours after the first bronchoscopy, while G1-level patients were reexamined 72 hours later. Subsequently, all patients were re-examined every 2-3 days until recovered or until only tunica mucosa bronchi congestion was identified by bronchoscopy. Results: Twenty patients had airway injury diagnosed by bronchoscopy including burns to the larynx and glottis or large airways. Bronchoscopic classification of the inhalation injury was performed, identifying 12 cases of grade G1 changes and 8 cases of grade G2. The airway injury in the 12 cases of grade G1 patients demonstrated recovery in 2-8 days, in the airway injury of the 8 cases of grade G2 patients had a prolonged recovery with airway injury improving in 6-21 days averaged. The difference in recovery time between the two groups was significant (P Conclusions: The use of flexible bronchoscopy has great value in the diagnosis of inhalational injury without any complications. Its use should be incorporated into clinical practice
Safety and efficacy of plasma exchange treatment in children with AQP4-IgG positive neuromyelitis optica spectrum disorder
Neuromyelitis optica spectrum disorder (NMOSD), a severe demyelinating disease, is rare among children. Plasma exchange (PE) is widely used as a salvage therapy for severe and corticosteroid-unresponsive patients with NMOSD. Presently, there are limited studies on the safety and efficacy of PE in children with NMOSD. Herein, we report the case of six children with NMOSD who received PE along with the outcomes and adverse events. All six children (female, age at onset 4 years 9 months–13 years 2 months) were AQP4-IgG positive and received standard PE using the COM.TEC Cell Separator. The interval between NMOSD onset and PE was 29 days (range 10–98). Only one patient (P3) who received PE 10 days after acute exacerbations exhibited clinical improvement. Her left visual acuity increased from 0.06 to 0.6 (spectacle-corrected visual acuity was 1.0) and her EDSS score decreased from 4 to 3 points. The other five patients had no clinical improvement and no EDSS scores changes after PE. Adverse events included rashes (P1, P3), acute non-occlusive thrombosis of the internal jugular vein (P1), and thrombocytopenia (P2). In conclusion, the timing of PE initiation as a rescue therapy for severe and corticosteroid-unresponsive pediatric AQP4-IgG positive NMOSD may be crucial to treatment efficacy, and early initiation of PE may be associated with a better outcome. Furthermore, PE has the potential risk for clinically significant adverse effects that should be considered before initiating the therapy and should be weighed against potential benefits
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