Pollution-free Production Technology of Linshu Sweet Potato

This paper elaborated the quality characteristics,nutritional value and specific production area of Linshu sweet potato.Besides,it summarized the pollution-free production technology of Linshu sweet potato from the aspects of origin selection,variety selection,production management,harvest and storage,so as to guide the normalization and standardization of production technology,improve production and quality,and further enhance the brand awareness of Linshu sweet potato in both the national and international markets.

A reliable and consistent production technology for high volume compacted graphite iron castings

The demands for improved engine performance,fuel economy,durability,and lower emissions provide a continual challenge for engine designers.The use of Compacted Graphite Iron(CGI)has been established for successful high volume series production in the passenger vehicle,commercial vehicle and industrial power sectors over the last decade.The increased demand for CGI engine components provides new opportunities for the cast iron foundry industry to establish efficient and robust CGI volume production processes,in China and globally.The production window range for stable CGI is narrow and constantly moving.Therefore,any one step single addition of magnesium alloy and the inoculant cannot ensure a reliable and consistent production process for complicated CGI engine castings.The present paper introduces the SinterCast thermal analysis process control system that provides for the consistent production of CGI with low nodularity and reduced porosity,without risking the formation of flake graphite.The technology is currently being used in high volume Chinese foundry production.The Chinese foundry industry can develop complicated high demand CGI engine castings with the proper process control technology.

Designing and Realization of Database Platform of County Agricultural Production Technology in Yunnan Province

According to the objective reality in Yunnan Province,such as great difference of weather,a great proportion of minorities,technological backwardness of agricultural production,low conversion rate of research accomplishments,and a limited number of agricultural technical personnel,ASP.NET technique and SQL Server 2005 database technique are adopted.Database platform of county agricultural production technology in Yunnan Province is established by using B/S structure.This platform includes presentation layer,application layer,and data layer,involving regional information,technology column information,technology classification information,technology content and other databases.It has six functional modules,namely information browse,system management,regional maintenance,technical section maintenance,category maintenance and technical information release,integrating crop cultivation,livestock breeding,economic forest management,plant protection,agricultural products processing,agricultural machinery use and other agricultural technical information.This platform can exchange information dynamically with the client,perform the query request from users,and send the result to users.This database platform has friendly interface,profuse information,high pertinency and so on,which offers rich and reliable information resources to farmers,agricultural technical personnel,and government.At present,this platform has been popularized in some areas of Yunnan Province and has obtained good results.

Full Mechanized Production Technology for Double-Low Rapeseed in Xianning City

This paper standardizes the operation of rapeseed production including variety choosing,field preparation,mechanical seeding,field management,mechanical harvesting etc.,to realize full mechanization of rapeseed production. The key technologies: the optimum sowing date was from mid-September to mid-October in rapeseed-rice（corn） double cropping system region,and from mid-October to late October in rapeseed-rice-rice triple-cropping region; seeding rate was 4. 5 kg/ha-6. 0 kg/ha; the optimum density was 450000-750000 plants per ha;150-240 kg N fertilizer,60-90 kg P2O5 fertilizer,90-135 kg K2O fertilizer and 7. 5-15 kg B fertilizer were used per ha,50% of N fertilizer and the rest of fertilizer were used as basal fertilizer; segmented harvesting was done when 70%-80% of siliques per plant was yellow and combined harvesting was done when more than 90% of siliques per plant was yellow or brown.

Geographical Indication of Unique Production Technology of Bahu Lotus Root

Bahu lotus root is a specialty of Hedong District,Linyi City,Shandong Province.It was recognized as a national product of geographical indication in 2011.This article describes the specific production area,unique production environment,rich cultural history and unique quality of Bahu lotus root,and summarizes its unique production from four aspects:selection of origin,selection of variety,production management and timely harvest,aiming to maintain the brand of Bahu lotus root to the greatest extent and further enhance the brand value and influence.

Study on In-vitro Production Technology of Embryos from Young Dorper Sheep

This study was conducted to investigate the in-vitro production technology of embryos from young Dorper sheep, so as to provide technical support for the utilization of ovarian follicles in young Dorper sheep. Tests were conducted from the induction of Dorper sheep of 4 to 8 weeks old using follicle stimulating hormone(FSH) and pregnant horse serum(PMSG), collection of oocytes, in-vitro oocyte maturation-fertilization-zygote cultivation and 2-4-cell-stage fertilized ovum transfer. The results showed that 585 oocytes were collected from eight Dorper sheep at the age of 4 and 8 weeks, with an average of 73.13 oocytes/sheep. 346 of the 2-4-cell-stage fertilized eggs were obtained, whose cleavage rate was 59.15%. 77 in-vitro fertilized eggs at 2-4-cell stage were transplanted into 17 recipient sheep, seven of which were pregnant and gave birth to 13 "test-tube sheep" with a conception rate of 41.18%. It is indicated that the hormone induction technique, in-vitro oocyte maturation-fertilization-zygote cultivation technique and 2-4-cell-stage fertilized ovum transfer technique used in this study can serve as effective techniques for the in-vitro production of embryos from Dorper sheep of 4-8 weeks old.

Standardized Production Technology of Selenium-enriched Hylocereus undatus(pitaya) in Natural Selenium-rich Areas

With the adjustment of the tropical and subtropical fruit industry organizations in southern China, the Hylocereus undatus(pitaya) industry is growing rapidly in subtropical Guangxi and other places. Guangxi is also the largest natural selenium-rich region in the country, and selenium-enriched pitaya is increasingly sought after by the general public. This paper described in detail the selection of selenium-enriched pitaya production fields, key planting techniques and core selenium enrichment techniques, with a view to providing technical guidance for the standardized production of selenium-enriched pitaya and providing technical support for improving the quality and efficiency of pitaya production in natural selenium-rich areas.

Development of Production Technology of Castle Composite Materials

The application of mechanical and chemical syntheses in an high-energy vibration mill of the FESTU makes easy the process of the introduction of reinforced powders in castle composite materials on the Al basis. The obtained reinforced phases of Al-Ti-C composition have high specific Surface due to peculiarities of explosive mechanical and chemical syntheses. It increases the uniformity of their distribution in a matrix melt during the mixing process and also increases properties of castle composite materials.

A novel hybrid seed production technology based on a unilateral cross-incompatibility gene in maize

Hybrid seed production technology(SPT)using genic recessive male sterility is of great importance in maize breeding.Here,we report a novel SPT based on a maize unilateral cross-incompatibility gene Zm Ga1F with an extremely low transgene transmission rate(TTR).Proper pollen-specific Zm Ga1F expression severely inhibits pollen tube growth leading to no fertilization.The maintainer line harbors a transgene cassette in an ipe1 male sterile background containing IPE1 to restore ipe1 male fertility,Zm Ga1F to prevent transgenic pollen escape,the red fluorescence protein encoding gene Ds Red2 for the separation of male sterile and fertile seeds,and the herbicide-resistant gene Bar for transgenic plant selection.When the maintainer line is selfed,gametes of ipe1/transgene and ipe1/-genotypes are produced,and pollen of the ipe1/transgene genotype is not able to fertilize female gametes due to pollen tube growth inhibition by Zm Ga1F.Subsequently,seeds of ipe1/ipe1 and ipe1/transgene genotypes are produced at a 1:1 ratio and could be separated easily by fluorescence-based seed sorting.Not a single seed emitting fluorescence is detected in more than 200,000 seeds examined demonstrating that the pollen-tube-inhibition(PTI)-based TTR is lower than what has been reported for similar technologies to date.This PTI-based SPT shows promising potential for future maize hybrid seed production.

Blue-coke production technology and the current state-of-the-art in China

Blue-coke is a kind of char obtained by the low temperature pyrolysis of non-caking or weakly-caking coal with high volatile matter.It is generally granular with high reactivity,high electrical resistivity and high in fixed carbon but low in ash,sulfur,aluminum and phosphorus content.It has low price and extensive application decided by the raw coal and the production technology.This paper reviews pyrolysis reactor,process principle,technology characteristic and application state of blue-coke production technology in China.It includes vertical oven technology,rotary kiln technology and rotary-hearth furnace technology with external-heating,and vertical oven technology,rotary-disc furnace technology and conveyor-belt furnace technology with internal-heating.According to the existing problems in industrial blue-coke production technology,perspectives in terms of dust removal from volatiles,coke quenching and breakthrough of pyrolysis technology are given.

Research and Practice of Production Technology for High Performance Low Alloy Steels in WISCO

The product system of high strength low alloy steels (HSLA) produced by Wuhan Iron and Steel (Group) Corporation (WISCO) was presented.A series of high performance structural steels have been developed for important construction projects around the world in different areas,such as bridge,pressure vessel,pipe line,shipbuilding,architecture,machinery and railway wagons.In order to promote the development of large heat input welding steel,high grade thick pipeline steel and long span bridge steel,a lot of advanced production technologies have been achieved through intensive investigation,such as the control of high purity,high homogenization and free defects in steel slabs,the rules of high melting point particle formation and distribution in micro and nano scale during steel production,and the TMCP technology for ultra low carbon bainite steel for medium and heavy plates.WISCO will carry on research and application of economic and weather-resistant steels and promote the developing and producing technologies of HSLA steel.

Production base of annual 3000 tons sintered NdFeB of SinoMagnetics Technology goes into operation

Sino magnetics technology is a high-tech enterprise specializing in R&D and production of rare earth permanent magnet materials.It is reported that the enterprise has accelerated the construction of annual3000 tons of high performance sintered NdFeB production base,and the construction of the base has been completed and put into use.

A Research on Senior People Online Consumption in China-From Perspective of Providing Technology Support

While the internet skills of the elderly is no longer a big problem,it is still necessary to further improve the online shopping experience and activity of the elderly.Evidently,the frequency of seniors shopping online is not nearly as high as the younger generation,as the elderly online shopping frequency is still calculated by weeks.People with higher education and younger age are more likely to accept technology products and understand how to use them,but people with lower education and older age will find it harder to use technology product.The majority of the elderly have a vision for the further development of technology to help them.This study shows that the elderly group shopping demand is large,but when the majority of the elderly choose offline consumption,the option of just a simple online solution is insufficient.Some shopping apps have made improvements in such aspects as font enlargement,color contrast enhancement and simplified operation steps.However,these improvements only solved the superficial problems,and failed to consider and solve the problems based on the experience of the elderly.

Technical Regulations for Production of Green Food--Adzuki Beans

According to the experiment and production practice,this paper brings forward the technical regulations on the production technology,the environmental conditions of production area,the output index,the site selection and land preparation,the variety selection and seed quality,the fertilization,the sowing,the field management,the pest and disease control,the harvesting,the storage,the filing etc. about the adzuki beans in Qingyang City.

How Trade Liberalization of Intermediates Contributes to China's Technology Upgrade

Under a heterogeneous firm analysis framework,this paper creates a theoretical model to investigate how trade liberalization of intermediates influences the technology choice of firms based on the data of Chinese manufacturers during 2000-2006.According to our empirical result,after China's WTO entry,trade liberalization of intermediates significantly induced Chinese exporters to apply advanced technologies.In our further consideration of the differentiated productivity of firms,we found that such an effect is related to the initial productivity of firms and only significantly induces mediumproductivity firms to upgrade their technologies.In addition,the technology-promotion effect of trade liberalization of intermediates is the most significant for technology-intensive exporters and the least significant for labor-intensive exporters.

Spatial differentiation and evolution trend of technical efficiency of forestry production in china

Based on the non-radial super-efficiency SBM model,the technical efficiency of forestry production in 30 provinces(municipalities,autonomous regions)across the country was measured from 2004 to 2018,and the Makov chain was introduced to analyze the evolution trend.The research found that:The average PTE of China's forestry from 2004 to 2018 was 0.516,and the overall level was not high;regional imbalances were prominent,showing a distribution pattern of"high in the south and low in the north"and"high in the east and low in the west".Regions with low and high levels of Forestry PTE have certain characteristics of"path dependence".in the long run,Forestry PTE growth will face greater pressure.

Numerical Simulation Study on the Effect of Horizontal Well Reservoir Stimulation for Gas Hydrate Production

A new gas hydrate reservoir stimulation method of in-situ fracturing with transient heating is proposed, in line with analysis of the technological bottlenecks faced by marine gas hydrate production. This method injects the developed chemical reagents into a hydrate reservoir through hydraulic fracturing, releasing heat during the chemical reaction to increase the hydrate decomposition rate. The chemical reaction product furthermore has a honeycomb structure to support fractures and increase reservoir permeability. Based on the geological model of natural gas hydrate in the South China Sea, three development methods are simulated to evaluate hydrate production capacity, consisting of horizontal well, fractured horizontal well and in-situ fracturing with transient heating well. Compared with the horizontal well, the simulation results show that the cumulative gas production of the fractured horizontal well in one year is 7 times that of the horizontal well, while the cumulative gas production of in-situ fracturing with transient heating well is 12 times that of the horizontal well, which significantly improves daily efficiency and cumulative gas production. In addition, the variation patterns of hydrate saturation and temperature-pressure fields with production time for the three exploitation plans are presented, it being found that three sensitive parameters of fracture conductivity, fracture half-length and fracture number are positively correlated with hydrate production enhancement. Through the simulations, basic data and theoretical support for the optimization of gas hydrate reservoir stimulation scheme has been provided.