Research on Upgrading and Building of Public Technology Service Platform for SMES in Jiangsu Province under the Background of “Internet +”

With the full popularization and rapid development of Internet technology, Jiangsu small and medium-sized enterprises are facing great opportunities and challenges. The public technical service platform for small and medium enterprises can effectively respond to the needs of small and medium-sized enterprises and strive for necessary government resources when conducting corporate guidance. At the same time, for government agencies, relying on the platform\u27s appeal and social relations is conducive to the effective publicity and promotion of government policies, so upgrading the public technology service platform for SMEs is the key to connect the government and enterprises. This paper breaks through the description of traditional technology service platform confined to geographic space, extends the technology service function to the Internet area, and introduces the “Internet +” concept and platform agglomeration theory to the upgrading and construction of public technology service platform of Jiangsu small and medium-sized enterprises

Legacy Effects of Herbivory Trampling on Soil Organic Carbon via Soil Properties, Plant Biomass and Functional Traits

Herbivores are important for ecosystem biogeochemistry, including soil carbon pools. Non-trophic interactions between herbivores and soil processes have recently gained attention, but remain underexplored. They include both direct and indirect effects of herbivore behaviour and physical soil disturbance by herbivores (e.g., trampling) causing compaction, and therefore probably influence historical contingency; however, little empirical data on the persistent impact or legacy effect of trampling and subsequent drivers of shifts are available. To address the knowledge gaps described above, we investigated whether the soil organic C (SOC) is driven by the legacy effect of sheep trampling intensity (0, 40, 80 and 120 footsteps m-2) in a typical steppe on the Loess Plateau. Cessation of trampling for two years, typical of historical trampling intensity, had positive effects on plant Shannon, Simpson, Pielou index, belowground biomass (BGB), soil available N (SAN), soil bulk density (SBD), community-weighted mean trait values of phosphorus (CWM_P) and SOC, but had negative effects on AGB, litter biomass (LB), CWM_C and soil moisture (SM). The effect of trampling increased with increased trampling intensity. LB, BGB, CWM_C, CWM_P, SBD, SAN and SM were the main drivers of trampling-mediated SOC. From the results of this study, trampling at 40 footsteps m−2 caused by sheep managed at a stocking rate of 2.7 sheep ha−1. This appears to be compatible with rangeland adaptive management. Ecosystem function can be maintained with high stocking rates by providing adequate deferment to re-establish sufficient cover and allow natural processes to restore soil processes

Research on the Operation of Changzhou Distribution Center of Huitong Express in the Peak Period of Online Shopping

With the rapid development of network technology and the improvement of payment tools, the advantages of online shopping have become increasingly prominent, and various online shopping festivals have rapidly emerged. During the peak period of online shopping and the peak season of express delivery business, the market needs don’t often be met, and problems such as warehouse explosions, express delivery delays, and false receipts often occur. As an important transfer link of express logistics, Distribution Centers will affect the entire express logistics process once operational problems occur. This topic takes Huitong Express Changzhou Distribution Center as an example. By analyzing the current operating conditions of various departments of Huitong Express Changzhou Distribution Center and the problems that arise during the peak period of online shopping (taking Double 11 as an example), we will further explore more efficient to achieve the maximum possible profit by reducing costs in order to achieve the maximum possible profit

Purification, composition analysis and antioxidant activity of different polysaccharides from the fruiting bodies of Pholiota adiposa

Three water-soluble polysaccharide fractions (PAP1-1, PAP1-2 and PAP2-1) were isolated and purified from the fruiting bodies of Pholiota adiposa by diethylaminoethanol (DEAE) Sepharose fast flow column and superdexTM 200 column chromatography on an AKTA Purifier system. Results of high-performance size-exclusion  chromatography (HPSEC) indicated that the average molecular weights of PAP1-1, PAP1-2 and PAP2-1 were 2.3 x 106 Da, 8.8 x 103 Da and 2.1 x 106 Da, respectively. Monosaccharide compositions analysis revealed that PAP1-1 and PAP2-1 were both mainly composed of glucose, and PAP1-2 was composed of rhamnose and  glucose with a mole ratio of 1:3.61. The evaluation of antioxidant activity suggested that PAP1-1 with  β-configuration glycosidic bond exhibited stronger scavenging activity of superoxide radical and hydroxyl  radical than PAP1-2 and PAP2-1 contained both α- and β-configuration glycosidic bond, and should be  explored as a novel potential antioxidant. Available data obtained with in vitro models suggested that  antioxidant activity of polysaccharide may be related to the configuration of glycosidic bond.Key words: Pholiota adipose, polysaccharide, purification, antioxidant activity

Evaluation of energy balances and greenhouse gas emissions from different agricultural production systems in Minqin Oasis, China

Publication history: Accepted - 4 February 2019; Published online - 26 June 2019Agricultural production in Minqin Oasis, China, is commonly categorized as intensive crop production (ICP), integrated crop–livestock production (ICLP), intensive livestock production (confined feeding) (IFLP), and extensive livestock production (grazing) (EGLP). The objectives of the present study were to use a life cycle assessment technique to evaluate on-farm energy balances and greenhouse gas (GHG) emissions of agricultural production, and to compare the differences among the four systems. Data used in the present study were collected from published literature and face-to face questionnaires from 529 farms in eight towns (two towns per production system) within Minqin county. The ANOVA of averaged data from 2014 to 2015 indicated that the net energy ratio (Output/Input) for the EGLP system was significantly higher than that for any other system (P < 0.01), whereas the difference among other three systems were not significant. The EGLP system generated lower CO2-eq emissions per hectare of farmland than other systems (P < 0.01). Relating carbon economic efficiency to market values (US$) of agricultural products, indicated that the carbon economic efficiency (US$/kg CO2-eq) of the IFLP system was significantly greater than that of other systems (P < 0.01). The major GHG emission sources varied across the systems, that is, soil respiration is the dominant source in EGLP, while the main sources in IFLP are enteric methane and manure management; in ICLP major sources are enteric methane, soil respiration and fertilizer; and in ICP are soil respiration and fertilizer. The structural equation modelling analysis showed that livestock category was strongly linked to net income. The direct effects and total effects of water use efficiency, via its positive influence on energy balances and GHG emissions were much stronger than those of other dependent variables. The study provides important benchmark information to help develop sustainable agricultural production systems on energy balances and GHG emissions in northwestern China.This study was financially supported by the Strategic Priority Research Program of Chinese Academy of Sciences, Grant No. XDA20100102, National Natural Science Foundation of China (No. 31660347 and 31672472), Program for Changjiang Scholars and Innovative Research Team in University (IRT_17R50)

Assessment of fishery management parameters for major prey fish species in the lower reaches of the Songhua River

The stability of the ecosystem directly affects the water quality and safety, fishery production, and people’s quality of life along the route. In this study, extensive biological information on five dominant species of prey fish, including Hemiculter leucisculus (Basilewsky, 1855), Acheilognathus macropterus (Bleeker), Rhodeus sericeus (Pallas,1776), Pseudorasbora parva (Temminck &amp; Schlegel, 1846), and Squalidus argentatus (Sauvage &amp; Dabry de Thiersant, 1874), was collected in the lower reaches of the Songhua River, and the population parameters and variation rules of these fish were evaluated. The results showed that at present, the fish resources in the lower reaches of the Songhua River were in an overexploited state. Although the growth rate of prey fish was accelerating, their growth potential was decreasing. In addition to the homogeneous structure of the fish community, it was increasingly evident that a high proportion of small-sized fish were present in the fish community. In addition, the growth length coefficients of the five prey fish species were all greater than 0.2, indicating that the prey fish were growing at a faster rate, and the range of the growth performance indicators were 3.49 ~ 4.37. Our data also demonstrated that the exploitation rates of Hemiculter leucisculus and Squalidus argentatus were both greater than 0.5, and the exploitation rates of all species were higher than Emax except for Pseudorasbora parva. Finally, based on the above results, the mesh size of all nets should be controlled above 45 mm to ensure the size of the main prey fish populations in the lower reaches of the Songhua River. In summary, these results provided variation rules and growth of prey fish resources in the lower reaches of the Songhua River. At the same time, the distribution of major commercial or endangered baiting grounds in the lower reaches of the Songhua River was determined, which was beneficial to the balance and integrity of the ecosystem