Maize value-added products play a crucial role in reducing post-harvest losses, enhancing food security, and generating income. While extensive research has focused on maize production in Cameroon, the exploration of ...Maize value-added products play a crucial role in reducing post-harvest losses, enhancing food security, and generating income. While extensive research has focused on maize production in Cameroon, the exploration of its value-added products and their profitability in the North-West Region remains underexplored. This study examined the profitability of maize value-added products in Mezam Division, with the objectives to: 1) identify various maize-based products, 2) assess the diversity of these products, 3) conduct a cost-benefit analysis of selected products, 4) examine the relationship between profitability and product diversity, and 5) identify key constraints impacting profitability. To achieve these objectives, structured questionnaires were administered to 500 small-scale maize entrepreneurs randomly selected from five subdivisions. Descriptive statistics were used to analyze objective 1 and 5, while the Shannon Diversity Index was employed to assess product diversity. Additionally, a cost-benefit analysis was conducted on four selected products namely pap, parched corn, peeled parboiled corn, and corn beer, and a correlation analysis was used to examine objective 4. In total, 13 maize value-added products were identified, with a diversity index of 4.4. The total cost of processing the four selected products per entrepreneur using 18 kg of maize per product was FCFA 83631.5 (US $132.75), while the total revenue was FCFA 121864.5 (US $193.43), resulting in an economic profit of FCFA 38,233 (US $60.69). Pap emerged as the most profitable product, with an economic profit of FCFA 27,875 (US $44.24), while corn beer was the least profitable, with an economic profit of FCFA 2133.46 (US $3.39). The correlation analysis revealed a strong negative relationship between product diversity and profitability (r = −0.91), indicating that entrepreneurs can maximize profitability by focusing on a few high-demand products like pap and parched corn. Key constraints to profitability included fluctuating market prices, high production costs, limited access to finance, and inadequate storage facilities. Despite these challenges, our findings indicate that maize value addition is profitable in Mezam Division. Entrepreneurs can leverage this data for informed decision-making and future investments. It is recommended that the government promote maize value addition and provide financial support for modern processing equipment to boost profitability and income generation.展开更多
With the deepening of international agricultural division of labor,trade methods have shifted from traditional bilateral trade to agricultural global value chain(AGVC)trade.Sanitary and Phytosanitary(SPS)measures are ...With the deepening of international agricultural division of labor,trade methods have shifted from traditional bilateral trade to agricultural global value chain(AGVC)trade.Sanitary and Phytosanitary(SPS)measures are a crucial factor affecting agricultural trade and a key variable in AGVC governance.This paper,based on the 2012-2020 University of International Business and Economics Global Value Chain Index(UIBE GVC Index)and the United Nations Conference on Trade and Development Non-Tariff Measures Database(UNCTAD NTMs Database),measures the structural heterogeneity and breadth heterogeneity of SPS measures.It also constructs mathematical models and fixed-effects models to explore the impact of SPS heterogeneity on AGVC upgrading.The findings reveal that the heterogeneity of SPS measures exerts a significant inhibitory effect on the upgrading of agricultural global value chains.Moreover,compared to developed countries,a reduction in SPS measures’heterogeneity demonstrates a more pronounced positive impact on AGVC upgrading in developing countries.展开更多
Lignin is one of the most important biomass resources. With the increasing consumption of petroleum resource, lignin transformation is of strategic significance and has attracted widely interest. As lignin is a random...Lignin is one of the most important biomass resources. With the increasing consumption of petroleum resource, lignin transformation is of strategic significance and has attracted widely interest. As lignin is a random construction of aromatic monomers, the degradation products are usually very complex, which limits the scaling application of lignin as feedstock for valuable chemicals. Thus, it is desperately desired to develop highly selective approach to lignin conversion. This review first gives a brief introduction to the structure of lignin, and then summarized the methods for selective transformation of lignin into phenols, aldehydes, carboxylic acids, alkanes and arenes. Finally, the challenges and opportunities of lignin selective transformation are discussed.展开更多
Photoelectrocatalysis(PEC)is a promising approach that can convert renewable solar energy into chemical energy,while most concern is concentrated on PEC water splitting to obtain high‐value‐added fuel—hydrogen.In p...Photoelectrocatalysis(PEC)is a promising approach that can convert renewable solar energy into chemical energy,while most concern is concentrated on PEC water splitting to obtain high‐value‐added fuel—hydrogen.In practice,more economic benefits can be produced based on PEC technique,such as H_(2)O oxidative H_(2)O_(2) synthesis,organic selective oxidation,organic pollutants degradation and CO_(2) reduction.Although there are plenty of excellent reviews focusing on the PEC water splitting system,the production of various high‐value‐added chemicals in PEC systems has not been discussed synthetically.This Account will focus on the production process of various high‐value‐added chemicals through PEC technology.The photoelectrode design,reaction environment and working mechanisms of PEC systems are also discussed in detail.We believe that this comprehensive Account of the expanded application of photoelectrocatalysis can add an inestimable impetus to the follow‐up development of this technology.展开更多
The electrochemical reduction of C02 into liquid fuels especially coupling with the intermittent renewable electricity offers a promising means of storing electricity in chemical form, which reduces the dependence on ...The electrochemical reduction of C02 into liquid fuels especially coupling with the intermittent renewable electricity offers a promising means of storing electricity in chemical form, which reduces the dependence on fossil fuels and mitigates the negative impact of anthropogenic C02 emissions on the planet. Although converting CO2 to fuels is not in itself a new concept, the field has not sub- stantially advanced in the last 30 years primarily because of the challenge of discovery of structural electrocatalysts and the development of membrane architectures for efficient collection of reactants and separation of products. This overview summarizes recent advances in catalytic conversion of CO2 and presents the challenges and future directions in producing value-added fuels.展开更多
In the process of financial management and operation, a firm should not only aim to maximize its shareholders' benefits, but also consider the interests of all stakeholders. Bearing social responsibility to each s...In the process of financial management and operation, a firm should not only aim to maximize its shareholders' benefits, but also consider the interests of all stakeholders. Bearing social responsibility to each stakeholder to a certain extent and pursuing harmonious social development are fully consistent with the concept of China's building a harmonious socialist society. Furthermore, added value also reflects the idea of social responsibility Based on the relational contract theory, the paper divides stakeholders into staff and shareholders under relational contracts, creditors, suppliers and consumers under transactional contracts and governments and communities under special contracts. The paper details the effect mechanism of a firm's bearing social responsibilities to each stakeholder on the creation of added value respectively, and considers that corporate social responsibilities should be included in the system for creating added value to theoretically support firm managers to fulfill social responsibilities.展开更多
Microalgae have been considered as an efficient microorganism for wastewater treatment with simultaneously bioenergy and high value-added compounds production.However,the high energy cost associated with complicated b...Microalgae have been considered as an efficient microorganism for wastewater treatment with simultaneously bioenergy and high value-added compounds production.However,the high energy cost associated with complicated biorefinery(e.g.microalgae cultivation,harvesting,drying,extraction,conversion,and purification)is a critical challenge that inhibits its large-scale application.Among different nutrition(e.g.carbon,nitrogen and phosphorous)sources,food processing wastewater is a relative safe and suitable one for microalgae cultivation due to its high organic content and low toxicity.In this review,the characteristic of different food wastewater is summarized and compared.The potential routes of value-added products(i.e.biofuel,pigment,polysaccharide,and amino acid)production along with wastewater purification are introduced.The existing challenges(e.g.biorefinery cost,efficiency and mechanism)of microalgal-based wastewater treatment are also discussed.The prospective of microalgae-based food processing wastewater treatment strategies(such as microalgae-bacteria consortium,poly-generation of bioenergy and value-added products)is forecasted.It can be observed that food wastewater treatment by microalgae could be a promising strategy to commercially realize waste source reduce,conversion and reutilization.展开更多
It is an unarguable fact that the urban-rural dual structure led to two different results. On the one hand,it had been playing a great role in the city development and prosperity,and on the other hand,it had led the s...It is an unarguable fact that the urban-rural dual structure led to two different results. On the one hand,it had been playing a great role in the city development and prosperity,and on the other hand,it had led the slow development of rural economy and the income gap between rural and urban areas. The government makes efforts to promote the process of urbanization to maintain the sustained development of China's economy and economic transformation which are the two needs of the Chinese reality. But in the top-level design of the policy,the government did not give a fair profits distribution to all social groups. On the contrary,the result of urban development is based on the expense of a part of the people's interests in exchange for the interests of another parts of the people,and especially on the government expropriation in the process of urban expansion. Under Land Administration Law of the People's Republic of China,the government monopolized the expropriation right of the rural land,and the rural collectives and farmers as the land owner and constructors respectively have no rights to decide the land use purposes. In fact,they are forced to accept the land compensation,and because of the little bargaining rights,they gain little from the land value increment. Comparatively,the governments became the biggest beneficiary who made use of the land as a source and capital to earn the achievement in their official career and more money required by the urban development. The paper mainly analyzes the current situation of the distribution of the land added value,elaborates the reasons why the government strives for the land interests,and discusses what farmers lose in the government expropriation. Last but not lest,the author reflects on the land reform and gives a proposal on distribution of land added value.展开更多
Commercial fish hatchery generates waste both organic and inorganic;the sources are primarily from uneaten food and fish feces. Conventional methods of treating hatchery wastes will increase the operating cost and bec...Commercial fish hatchery generates waste both organic and inorganic;the sources are primarily from uneaten food and fish feces. Conventional methods of treating hatchery wastes will increase the operating cost and become extra burden in production. It is necessary to develop a new research application of this nonconventional resource and reduce the negative impacts of hatchery waste on the environment. The whole project is to utilize hatchery waste through bioprocess for probiotic fortified live feed production. In this study, the chemical composition of hatchery waste was determined to understand the suitability waste to get value-added derived products through bioprocess. Composite samples were collected everyday and dried in an oven at a temperature of 65°C until complete dryness. Dried samples were mixed well and grinded into fine powder. The analytical parameters like total solids, ammonium nitrogen, nitrite, nitrate and phosphate were determined from the freshly collected samples. Total nitrogen, total phosphorus and total potassium were determined from the dry samples. Total solids, ammonium nitrogen, nitrite, nitrate and phosphate-phosphorus were observed in the ranged from 75 - 82 mg/L, 0.25 - 8.5 mg/L, 0.05 - 1.9 mg/L, 0.04 - 6.7 mg/L and 4.1 - 16.7 mg/L respectively. On the other hand, the mean content of 3.75% total nitrogen, 1.80% total phosphorus and 0.15% potassium were determined in dry hatchery wastes. The analytical parameters are useful and demonstrate that the nutrients in both fresh and dry waste will be supportive for the growth of microbes in the bioprocess system.展开更多
With the increasing demand for VAS from the subscribers, mobile operators are making efforts to create more services to promote the continuous development of the non-voice service application. The following three mobi...With the increasing demand for VAS from the subscribers, mobile operators are making efforts to create more services to promote the continuous development of the non-voice service application. The following three mobile VASes are becoming the development focus of operators.展开更多
Innovation group is the subject of innovation activities,to promote the increment of human capital group innovation,contribute to more,better innovation,create more benefits and wealth for enterprises,organizations an...Innovation group is the subject of innovation activities,to promote the increment of human capital group innovation,contribute to more,better innovation,create more benefits and wealth for enterprises,organizations and the whole society.In the value-added mechanism,human capital value from an accretion and symbiotic value.Establish training mechanism and incentive mechanism to promote a health and value based human capital value,improve the communication mechanism and operation mechanism to promote symbiosis value-added based human capital value,is to strengthen the team effect,an important way to promote the increment of human capital group innovation.展开更多
The study examined the implication of a decentralized Value Added Tax system for states in Nigeria.It is a theoretical presentation that made is made of journals,articles,and data from the National Bureau of Statistic...The study examined the implication of a decentralized Value Added Tax system for states in Nigeria.It is a theoretical presentation that made is made of journals,articles,and data from the National Bureau of Statistics(NBS)accessed on Google Scholar Websites.A total of eighty(80)articles were accessed.Results from a theoretical review revealed that while few states in Nigeria are in favor of a decentralized VAT administration in the country,quite a number of them(States)are averse to the new VAT regime due to differences among the states in terms of volume of business activities and economic power as many of the states rely on federal allocation.The study,therefore,recommends Partial Decentralization(PD)of VAT administration in Nigeria as a measure of autonomy for states that will guarantee fairness in resource control in the Nigerian Society.展开更多
Based on heterogeneity in firm's sales destinations and trade patterns, this paper estimates China's ratio of value-added exports(RVAE) using value-added trade accounting, and discusses the evolution of China&...Based on heterogeneity in firm's sales destinations and trade patterns, this paper estimates China's ratio of value-added exports(RVAE) using value-added trade accounting, and discusses the evolution of China's comparative advantages from the perspective of value-added trade. Our research findings suggest that without taking into account heterogeneity in firm's sales destinations and trade patterns,China's RVAE will be overestimated. Conventional gross trade accounting underestimates the export competitiveness of China's labor-intensive and capital intensive sectors, but overestimates the export competitiveness of China's technology-intensive sectors,which leads to a significant reversal of comparative advantages. Conventional gross trade accounting method overestimates the trade surplus of China's manufacturing and technology-intensive sectors with the US by about 60% and 85% respectively.展开更多
Objective To establish an economic value added(EVA)performance evaluation system to maintain the competitiveness of pharmaceutical company A under the environment of fierce competition in the pharmaceutical industry.M...Objective To establish an economic value added(EVA)performance evaluation system to maintain the competitiveness of pharmaceutical company A under the environment of fierce competition in the pharmaceutical industry.Methods An EVA performance evaluation model was established by adjusting the items of EVA performance evaluation index,such as after-tax profits,total invested capital and weighted average cost of capital rate.Results and Conclusion EVA values of pharmaceutical company A from 2014 to 2018 were calculated and compared with the traditional performance evaluation method,it was found that EVA performance evaluation model reflected the real performance of pharmaceutical company A.Therefore,pharmaceutical company A is doing well,but its growth rate is unstable.展开更多
The comprehensive benefit evaluation of the existing building energy efficient renovation project cannot be separated from the scientific and effective evaluation mechanism.Based on the value-added life perspective,th...The comprehensive benefit evaluation of the existing building energy efficient renovation project cannot be separated from the scientific and effective evaluation mechanism.Based on the value-added life perspective,this paper analyzes the implementation subject,standard,system and principle of the comprehensive benefit evaluation of the existing building energy efficient renovation project.It plans the process of comprehensive benefit evaluation,and builds a scientific and reasonable operation platform of evaluation system,with a view to promoting the effective implementation of the comprehensive benefit evaluation of existing building energy-saving retrofits.展开更多
This research will use food fermentation technology and supercritical extraction technology to enhance the value-added application of the active ingredients of Jaboticaba. The results showed that the bioactive compone...This research will use food fermentation technology and supercritical extraction technology to enhance the value-added application of the active ingredients of Jaboticaba. The results showed that the bioactive component content of samples after value-added fermentation and extraction was 19.86% to 69.30% higher than that of fresh fruit. In the analysis of antioxidant activity, it was found that the ability to scavenge free radicals was higher than that of fresh fruits. The total antioxidant activity and reducing power were best after fermentation and supercritical extraction, reaching more than 90%. After fermentation, the active ingredients were detected, and the resveratrol content was 3.27 mg/L, the anthocyanin content was 67.71 mg/g, and the tryptophan content was 0.48 gm/Kg, all of which were higher than those in fresh fruits. The results of this research are helpful for the development of natural anti-inflammatory or sleep-aiding products. It is of great significance for the research on anti-inflammatory and sleep-aiding. It can also provide value-added processing conditions to solve the problem of Jiabao fruit during the peak production season. The pressure of excessive production and processing will increase the value-added economy of the industry and make Jaboticaba more valuable for research.展开更多
文摘Maize value-added products play a crucial role in reducing post-harvest losses, enhancing food security, and generating income. While extensive research has focused on maize production in Cameroon, the exploration of its value-added products and their profitability in the North-West Region remains underexplored. This study examined the profitability of maize value-added products in Mezam Division, with the objectives to: 1) identify various maize-based products, 2) assess the diversity of these products, 3) conduct a cost-benefit analysis of selected products, 4) examine the relationship between profitability and product diversity, and 5) identify key constraints impacting profitability. To achieve these objectives, structured questionnaires were administered to 500 small-scale maize entrepreneurs randomly selected from five subdivisions. Descriptive statistics were used to analyze objective 1 and 5, while the Shannon Diversity Index was employed to assess product diversity. Additionally, a cost-benefit analysis was conducted on four selected products namely pap, parched corn, peeled parboiled corn, and corn beer, and a correlation analysis was used to examine objective 4. In total, 13 maize value-added products were identified, with a diversity index of 4.4. The total cost of processing the four selected products per entrepreneur using 18 kg of maize per product was FCFA 83631.5 (US $132.75), while the total revenue was FCFA 121864.5 (US $193.43), resulting in an economic profit of FCFA 38,233 (US $60.69). Pap emerged as the most profitable product, with an economic profit of FCFA 27,875 (US $44.24), while corn beer was the least profitable, with an economic profit of FCFA 2133.46 (US $3.39). The correlation analysis revealed a strong negative relationship between product diversity and profitability (r = −0.91), indicating that entrepreneurs can maximize profitability by focusing on a few high-demand products like pap and parched corn. Key constraints to profitability included fluctuating market prices, high production costs, limited access to finance, and inadequate storage facilities. Despite these challenges, our findings indicate that maize value addition is profitable in Mezam Division. Entrepreneurs can leverage this data for informed decision-making and future investments. It is recommended that the government promote maize value addition and provide financial support for modern processing equipment to boost profitability and income generation.
文摘With the deepening of international agricultural division of labor,trade methods have shifted from traditional bilateral trade to agricultural global value chain(AGVC)trade.Sanitary and Phytosanitary(SPS)measures are a crucial factor affecting agricultural trade and a key variable in AGVC governance.This paper,based on the 2012-2020 University of International Business and Economics Global Value Chain Index(UIBE GVC Index)and the United Nations Conference on Trade and Development Non-Tariff Measures Database(UNCTAD NTMs Database),measures the structural heterogeneity and breadth heterogeneity of SPS measures.It also constructs mathematical models and fixed-effects models to explore the impact of SPS heterogeneity on AGVC upgrading.The findings reveal that the heterogeneity of SPS measures exerts a significant inhibitory effect on the upgrading of agricultural global value chains.Moreover,compared to developed countries,a reduction in SPS measures’heterogeneity demonstrates a more pronounced positive impact on AGVC upgrading in developing countries.
基金supported by the National Natural Science Foundation of China (No. 21603235)National Key Research and Development Program of China (No. 2017YFA0403103)Chinese Academy of Sciences (No. QYZDY-SSW-SLH013)
文摘Lignin is one of the most important biomass resources. With the increasing consumption of petroleum resource, lignin transformation is of strategic significance and has attracted widely interest. As lignin is a random construction of aromatic monomers, the degradation products are usually very complex, which limits the scaling application of lignin as feedstock for valuable chemicals. Thus, it is desperately desired to develop highly selective approach to lignin conversion. This review first gives a brief introduction to the structure of lignin, and then summarized the methods for selective transformation of lignin into phenols, aldehydes, carboxylic acids, alkanes and arenes. Finally, the challenges and opportunities of lignin selective transformation are discussed.
文摘Photoelectrocatalysis(PEC)is a promising approach that can convert renewable solar energy into chemical energy,while most concern is concentrated on PEC water splitting to obtain high‐value‐added fuel—hydrogen.In practice,more economic benefits can be produced based on PEC technique,such as H_(2)O oxidative H_(2)O_(2) synthesis,organic selective oxidation,organic pollutants degradation and CO_(2) reduction.Although there are plenty of excellent reviews focusing on the PEC water splitting system,the production of various high‐value‐added chemicals in PEC systems has not been discussed synthetically.This Account will focus on the production process of various high‐value‐added chemicals through PEC technology.The photoelectrode design,reaction environment and working mechanisms of PEC systems are also discussed in detail.We believe that this comprehensive Account of the expanded application of photoelectrocatalysis can add an inestimable impetus to the follow‐up development of this technology.
文摘The electrochemical reduction of C02 into liquid fuels especially coupling with the intermittent renewable electricity offers a promising means of storing electricity in chemical form, which reduces the dependence on fossil fuels and mitigates the negative impact of anthropogenic C02 emissions on the planet. Although converting CO2 to fuels is not in itself a new concept, the field has not sub- stantially advanced in the last 30 years primarily because of the challenge of discovery of structural electrocatalysts and the development of membrane architectures for efficient collection of reactants and separation of products. This overview summarizes recent advances in catalytic conversion of CO2 and presents the challenges and future directions in producing value-added fuels.
基金supported by the Excellent Young Talents in Colleges and Universities in Anhui province Education Project (Grant No. gxyq ZD2017076)Philosophy and Social Planning Project in Anhui province (Grant No. AHSKQ2015D38)Talent Fund Project of Hefei University (Grant No. 15RC21)
文摘In the process of financial management and operation, a firm should not only aim to maximize its shareholders' benefits, but also consider the interests of all stakeholders. Bearing social responsibility to each stakeholder to a certain extent and pursuing harmonious social development are fully consistent with the concept of China's building a harmonious socialist society. Furthermore, added value also reflects the idea of social responsibility Based on the relational contract theory, the paper divides stakeholders into staff and shareholders under relational contracts, creditors, suppliers and consumers under transactional contracts and governments and communities under special contracts. The paper details the effect mechanism of a firm's bearing social responsibilities to each stakeholder on the creation of added value respectively, and considers that corporate social responsibilities should be included in the system for creating added value to theoretically support firm managers to fulfill social responsibilities.
基金Supported by the National key Research and Development project(2016YFB0601003)National Natural Science Foundation of China(21878228 and31701526)+3 种基金Basic Research Fees of Universities and Colleges in Tianjin(2017KJ001)Youth Teacher Innovation Fund of Tianjin University of Science&Technology(2015LG26)Project Program of Key Laboratory of Food Nutrition and Safety,Ministry of Education,China(2018007)Open Project program of State Key Laboratory of Food Nutrition and Safety,Tianjin University of Science&Technology(SKLFNS-KF-201824).
文摘Microalgae have been considered as an efficient microorganism for wastewater treatment with simultaneously bioenergy and high value-added compounds production.However,the high energy cost associated with complicated biorefinery(e.g.microalgae cultivation,harvesting,drying,extraction,conversion,and purification)is a critical challenge that inhibits its large-scale application.Among different nutrition(e.g.carbon,nitrogen and phosphorous)sources,food processing wastewater is a relative safe and suitable one for microalgae cultivation due to its high organic content and low toxicity.In this review,the characteristic of different food wastewater is summarized and compared.The potential routes of value-added products(i.e.biofuel,pigment,polysaccharide,and amino acid)production along with wastewater purification are introduced.The existing challenges(e.g.biorefinery cost,efficiency and mechanism)of microalgal-based wastewater treatment are also discussed.The prospective of microalgae-based food processing wastewater treatment strategies(such as microalgae-bacteria consortium,poly-generation of bioenergy and value-added products)is forecasted.It can be observed that food wastewater treatment by microalgae could be a promising strategy to commercially realize waste source reduce,conversion and reutilization.
文摘It is an unarguable fact that the urban-rural dual structure led to two different results. On the one hand,it had been playing a great role in the city development and prosperity,and on the other hand,it had led the slow development of rural economy and the income gap between rural and urban areas. The government makes efforts to promote the process of urbanization to maintain the sustained development of China's economy and economic transformation which are the two needs of the Chinese reality. But in the top-level design of the policy,the government did not give a fair profits distribution to all social groups. On the contrary,the result of urban development is based on the expense of a part of the people's interests in exchange for the interests of another parts of the people,and especially on the government expropriation in the process of urban expansion. Under Land Administration Law of the People's Republic of China,the government monopolized the expropriation right of the rural land,and the rural collectives and farmers as the land owner and constructors respectively have no rights to decide the land use purposes. In fact,they are forced to accept the land compensation,and because of the little bargaining rights,they gain little from the land value increment. Comparatively,the governments became the biggest beneficiary who made use of the land as a source and capital to earn the achievement in their official career and more money required by the urban development. The paper mainly analyzes the current situation of the distribution of the land added value,elaborates the reasons why the government strives for the land interests,and discusses what farmers lose in the government expropriation. Last but not lest,the author reflects on the land reform and gives a proposal on distribution of land added value.
文摘Commercial fish hatchery generates waste both organic and inorganic;the sources are primarily from uneaten food and fish feces. Conventional methods of treating hatchery wastes will increase the operating cost and become extra burden in production. It is necessary to develop a new research application of this nonconventional resource and reduce the negative impacts of hatchery waste on the environment. The whole project is to utilize hatchery waste through bioprocess for probiotic fortified live feed production. In this study, the chemical composition of hatchery waste was determined to understand the suitability waste to get value-added derived products through bioprocess. Composite samples were collected everyday and dried in an oven at a temperature of 65°C until complete dryness. Dried samples were mixed well and grinded into fine powder. The analytical parameters like total solids, ammonium nitrogen, nitrite, nitrate and phosphate were determined from the freshly collected samples. Total nitrogen, total phosphorus and total potassium were determined from the dry samples. Total solids, ammonium nitrogen, nitrite, nitrate and phosphate-phosphorus were observed in the ranged from 75 - 82 mg/L, 0.25 - 8.5 mg/L, 0.05 - 1.9 mg/L, 0.04 - 6.7 mg/L and 4.1 - 16.7 mg/L respectively. On the other hand, the mean content of 3.75% total nitrogen, 1.80% total phosphorus and 0.15% potassium were determined in dry hatchery wastes. The analytical parameters are useful and demonstrate that the nutrients in both fresh and dry waste will be supportive for the growth of microbes in the bioprocess system.
文摘With the increasing demand for VAS from the subscribers, mobile operators are making efforts to create more services to promote the continuous development of the non-voice service application. The following three mobile VASes are becoming the development focus of operators.
基金Supported by the Training Program of Fujian Excellent Talents in University(FETU)
文摘Innovation group is the subject of innovation activities,to promote the increment of human capital group innovation,contribute to more,better innovation,create more benefits and wealth for enterprises,organizations and the whole society.In the value-added mechanism,human capital value from an accretion and symbiotic value.Establish training mechanism and incentive mechanism to promote a health and value based human capital value,improve the communication mechanism and operation mechanism to promote symbiosis value-added based human capital value,is to strengthen the team effect,an important way to promote the increment of human capital group innovation.
文摘The study examined the implication of a decentralized Value Added Tax system for states in Nigeria.It is a theoretical presentation that made is made of journals,articles,and data from the National Bureau of Statistics(NBS)accessed on Google Scholar Websites.A total of eighty(80)articles were accessed.Results from a theoretical review revealed that while few states in Nigeria are in favor of a decentralized VAT administration in the country,quite a number of them(States)are averse to the new VAT regime due to differences among the states in terms of volume of business activities and economic power as many of the states rely on federal allocation.The study,therefore,recommends Partial Decentralization(PD)of VAT administration in Nigeria as a measure of autonomy for states that will guarantee fairness in resource control in the Nigerian Society.
基金supported by the Youth Program of the National Social Sciences Fund of China(NSSFC)"Study on the Real Interest Distribution Pattern of China's Trade Surplus under the New System of International Division of Labor"(Grant No.12CJY083)Basic Scientific Research Funding and Backbone Talent Support Program for Key Disciplines of Central Universities(Nankai University)"Study on Industrial Agglomeration,Financing Constraint and the Export Behaviors of Chinese Enterprises"(Grant No.NKZXA1405)the Collaborative Innovation Center for the Socialist Economy with Chinese Characteristics of Nankai University and the Center for Asian Studies,Nankai University(Grant No.AS1607)
文摘Based on heterogeneity in firm's sales destinations and trade patterns, this paper estimates China's ratio of value-added exports(RVAE) using value-added trade accounting, and discusses the evolution of China's comparative advantages from the perspective of value-added trade. Our research findings suggest that without taking into account heterogeneity in firm's sales destinations and trade patterns,China's RVAE will be overestimated. Conventional gross trade accounting underestimates the export competitiveness of China's labor-intensive and capital intensive sectors, but overestimates the export competitiveness of China's technology-intensive sectors,which leads to a significant reversal of comparative advantages. Conventional gross trade accounting method overestimates the trade surplus of China's manufacturing and technology-intensive sectors with the US by about 60% and 85% respectively.
文摘Objective To establish an economic value added(EVA)performance evaluation system to maintain the competitiveness of pharmaceutical company A under the environment of fierce competition in the pharmaceutical industry.Methods An EVA performance evaluation model was established by adjusting the items of EVA performance evaluation index,such as after-tax profits,total invested capital and weighted average cost of capital rate.Results and Conclusion EVA values of pharmaceutical company A from 2014 to 2018 were calculated and compared with the traditional performance evaluation method,it was found that EVA performance evaluation model reflected the real performance of pharmaceutical company A.Therefore,pharmaceutical company A is doing well,but its growth rate is unstable.
文摘The comprehensive benefit evaluation of the existing building energy efficient renovation project cannot be separated from the scientific and effective evaluation mechanism.Based on the value-added life perspective,this paper analyzes the implementation subject,standard,system and principle of the comprehensive benefit evaluation of the existing building energy efficient renovation project.It plans the process of comprehensive benefit evaluation,and builds a scientific and reasonable operation platform of evaluation system,with a view to promoting the effective implementation of the comprehensive benefit evaluation of existing building energy-saving retrofits.
文摘This research will use food fermentation technology and supercritical extraction technology to enhance the value-added application of the active ingredients of Jaboticaba. The results showed that the bioactive component content of samples after value-added fermentation and extraction was 19.86% to 69.30% higher than that of fresh fruit. In the analysis of antioxidant activity, it was found that the ability to scavenge free radicals was higher than that of fresh fruits. The total antioxidant activity and reducing power were best after fermentation and supercritical extraction, reaching more than 90%. After fermentation, the active ingredients were detected, and the resveratrol content was 3.27 mg/L, the anthocyanin content was 67.71 mg/g, and the tryptophan content was 0.48 gm/Kg, all of which were higher than those in fresh fruits. The results of this research are helpful for the development of natural anti-inflammatory or sleep-aiding products. It is of great significance for the research on anti-inflammatory and sleep-aiding. It can also provide value-added processing conditions to solve the problem of Jiabao fruit during the peak production season. The pressure of excessive production and processing will increase the value-added economy of the industry and make Jaboticaba more valuable for research.
