Convenience rice has become widely popular due to its easy availability for cooking. This study investigated the starch structure and composition of leachate and the microstructure of reheated convenience rice using n...Convenience rice has become widely popular due to its easy availability for cooking. This study investigated the starch structure and composition of leachate and the microstructure of reheated convenience rice using novel processing technologies: super-heated steaming(SHS), auto-electric cooking(AEC), and pressurized-steam cooking(PSC). Additionally, the effect of two different target water contents(58% and 63%) was also evaluated. The PSC_63% sample had the highest total solids and amylopectin amount in the leachate. The amylopectin amount in the leachate differed significantly based on the targeted water content. Morphological characterization revealed that the swelling of starch and the coated layer on the surface of rice grains were most pronounced in the PSC_63% sample due to the pressure processing. The textural hardness of the AEC_58% sample was much higher than that of the other samples. The PSC_63% sample had the highest textural adhesiveness value, which can be attributed to the highest amylopectin amount in the leachate. Sensory characterization showed that the PSC_63% sample had the highest glossiness, whiteness, moistness, and overall acceptability. The principal component analysis score plots presented substantial differences in the leachate and textural and sensory characteristics of reheated convenience rice among the different processing technologies.展开更多
In this paper, the optimization of micro-cogeneration (μ-CHP) system sizing for convenience stores in Thailand is conducted under the present condition of fuel prices and tariff rates. The assessment of (μ-CHP) syst...In this paper, the optimization of micro-cogeneration (μ-CHP) system sizing for convenience stores in Thailand is conducted under the present condition of fuel prices and tariff rates. The assessment of (μ-CHP) system performance is analyzed by using Primary Energy Saving (PES) Ratio for evaluating the energy performance. Also, the Annual Cost Saving Ratio (CSR) and Payback Period (PBP) are used for evaluating the economic performance of μ-CHP system. The analysis results show the optimal size of μ-CHP system under possible conditions including the operating schedule and system’s efficiency were conducted.展开更多
A walkable urban built environment with convenient facilities is the key to improve the living quality of urban residents and build a livable city in the new era.Taking each urban housing estate as the center and base...A walkable urban built environment with convenient facilities is the key to improve the living quality of urban residents and build a livable city in the new era.Taking each urban housing estate as the center and based on walking accessibility,the walking circle of housing estates was constructed.Taking the six functional systems of convenient shopping,catering service,fi nancial service,scientifi c research and education,leisure and entertainment,and medical service as evaluation factors,and considering the actual frequency of residents’use of various public service facilities and the reduction of walking,the convenience evaluation system of public service facilities was established.Taking the urban built environment within the Second Ring Road of Shijiazhuang City,Hebei Province as an example,it is found that the convenience of public service facilities in the walking circle of housing estates within the Second Ring Road presented a circular layer distribution of“low outside and high inside”.This study will provide the reference for urban renewal and renovation and improvement of facilities.展开更多
Background: Orthodontics is a dental specialty focusing on correcting dental irregularities and malocclusion. Knowledge and attitudes towards orthodontic treatment are crucial for promoting oral health and overall wel...Background: Orthodontics is a dental specialty focusing on correcting dental irregularities and malocclusion. Knowledge and attitudes towards orthodontic treatment are crucial for promoting oral health and overall well-being. Education and awareness play a vital role in ensuring optimal treatment outcomes and improving quality of life. Aim: This study aims to determine the knowledge and attitudes of Kwame Nkrumah University of Science and Technology (KNUST) pre-clinical dentistry students concerning orthodontic therapy. Methodology: This research is a quantitative descriptive cross-sectional study. The research used a non-random convenience sampling method to form the desired sample. For data collection, an interview-administered questionnaire was used over one month. The study set its sights on pre-clinical dental students in KNUST. A total of 150 questionnaires were printed to meet the sample size. Results: The results of the research showed that the knowledge level of KNUST pre-clinical students on orthodontic treatment and its nuances is quite limited. They however had a fair level of knowledge on the disease or ailment that orthodontic treatments solved (especially malocclusion). Their interest in orthodontic treatments on the other hand was quite significant, with a large number having interest in it. Conclusion: To conclude, KNUST pre-clinical students in Ghana although having a limited level of knowledge on orthodontic treatments have a keen interest in undergoing them regardless of the discomforts or the length of time.展开更多
The idea of lithosphere delamination has long been conceived as a mechanism to cause tectonic uplift,metamorphism and magmatism in active orogenic belts[1–3].Since the publication of the two seminal papers by Davies ...The idea of lithosphere delamination has long been conceived as a mechanism to cause tectonic uplift,metamorphism and magmatism in active orogenic belts[1–3].Since the publication of the two seminal papers by Davies and von Blanckenburg[4,5],the idea of slab breakoff has been more widely accepted over the last$20 years as the favored mechanism to cause collision zone mag-展开更多
BACKGROUND: The route of most systemic diseases begins in the oral cavity. Oral health knowledge of mouthwashes and their uses is indispensable for the general population and especially adolescents. The use of mouthwa...BACKGROUND: The route of most systemic diseases begins in the oral cavity. Oral health knowledge of mouthwashes and their uses is indispensable for the general population and especially adolescents. The use of mouthwash by adolescents can be a beneficial adjunct to their oral hygiene routine, providing additional protection against dental diseases and promoting fresher breath. Overuse or misuse of mouthwash, particularly those containing alcohol or other potentially irritating ingredients, may lead to adverse effects such as oral mucosal irritation, dry mouth, or alteration of the oral microbiome. OBJECTIVES: To determine the knowledge, attitude, and use of mouthwash among senior high school students in Kumasi. METHODOLOGY: 120 students responded to a standard questionnaire by a convenient sample technique. The Statistical Package for Social Sciences (SPSS) 22.0 and MS Excel were used for data management and analysis. The results of the study were presented using tables, bar charts, and pie chart. RESULTS: The ages of the respondents ranged from 14 to 20 years. Out of the 120 participants, 71 students that represent 59.2% of the total, used mouthwash. Majority of the participants (63%) utilized a mouthwash after brushing their teeth. 49% of the participants reported using mouthwash to address halitosis, 37% used it to combat periodontal disease, and 10% used it for relief from a sore throat. CONCLUSION: In general, most of the participants who use mouthwash had excellent knowledge and a positive attitude toward the use of mouthwash.展开更多
On Shenzhen,Guangdong Province,a city known for its tech innovation,residents have recently adopted helicopters as“air taxis”alongside buses,cabs and the subway.On board these air taxis,passengers are treated to pan...On Shenzhen,Guangdong Province,a city known for its tech innovation,residents have recently adopted helicopters as“air taxis”alongside buses,cabs and the subway.On board these air taxis,passengers are treated to panoramic views of the city’s picturesque landscapes,making their journeys both convenient and alluring.展开更多
Convenience vegetable stores are distributed in various districts of the city,which is difficult to distribute,mainly reflected in the high cost of distribution and transportation.In order to solve this problem,combin...Convenience vegetable stores are distributed in various districts of the city,which is difficult to distribute,mainly reflected in the high cost of distribution and transportation.In order to solve this problem,combining with the characteristics of convenience vegetable stores and urban transportation,an optimization model of distribution route considering transit nodes is established.The model takes into account both soft time window and hard time window.Soft time window is used to calculate the cost increase caused by an urban traffic jam.Hard time window is the unified service time of convenience vegetable stores,and the cost of transit damage is considered to make the model more realistic.The genetic algorithm is used to solve the model with a onestage solution method.The effectiveness and feasibility of the model and algorithm are verified by an example.The effectiveness of the proposed algorithm is verified by comparing the optimal solutions in the case of setting up transit and not setting up transit.The result shows that when the number of convenience vegetable stores is large,the establishment of transit can reduce the overall transportation cost.Quantitative analysis shows that with the further increase in convenience vegetable stores in cities,the distribution of convenience vegetable stores can be improved by planning scientific path and by increasing transit nodes.展开更多
This paper analyzes the key issues of resource integration,and proposes a method for solving the problem of achieving efficient resource integration for convenience service platforms that adopt dynamic service modes.T...This paper analyzes the key issues of resource integration,and proposes a method for solving the problem of achieving efficient resource integration for convenience service platforms that adopt dynamic service modes.This method considers both the service level of collaborative resources under dynamic service modes,and collaborative resources’satisfaction of service modes in the resource integration.In addition,dominant factors needing the most attention during resource integration under dynamic service modes are excavated.Moreover,a model for resource integration optimization is established,and ant colony algorithm is used to solve the problem.Finally,a case is used to verify the feasibility of the method.展开更多
With the continuous advancement of science and technology,our lifestyles are undergoing significant changes,with wearable technology emerging as a captivating trend.In this digital era,there is a growing demand for so...With the continuous advancement of science and technology,our lifestyles are undergoing significant changes,with wearable technology emerging as a captivating trend.In this digital era,there is a growing demand for solutions that cater to people’s needs for health and comfort.The wearable inflatable massage chair represents one such innovation designed to meet these evolving needs.This project is focused on creating a“wearable and portable massage chair”that is both convenient and lightweight.It serves as a massage solution particularly beneficial for the elderly and sedentary individuals.This innovative chair can be used by the elderly during outings or errands,as well as by office workers on business trips,while driving,or commuting via subway.Users can simply lean against the seat or a wall,enjoying moments of relaxation amid the busy and fast-paced modern era.展开更多
When Malawian President Lazarus Chakwera delivered a State of the Nation Address at the 50th Parliamentary Session and Budget Meeting in February,tourism was top of mind.
In Shenzhen,Guangdong Province,a city known for its tech innovation,residents have recently adopted helicopters as“air taxis”alongside buses,cabs and the subway.On board these air taxis,passengers are treated to pan...In Shenzhen,Guangdong Province,a city known for its tech innovation,residents have recently adopted helicopters as“air taxis”alongside buses,cabs and the subway.On board these air taxis,passengers are treated to panoramic views of the city’s picturesque landscapes,making their journeys both convenient and alluring.展开更多
Investors eye business opportunities as China focuses on convenience store development Twenty years ago,convenience stores were a newly sprouted phenomenon in China.Baishi Bianli,a Hong Kong invested brand,opened the ...Investors eye business opportunities as China focuses on convenience store development Twenty years ago,convenience stores were a newly sprouted phenomenon in China.Baishi Bianli,a Hong Kong invested brand,opened the first Western-style convenience store in Shanghai in 1993 with great fanfare.A Shanghai-based newspaper reported,"Snacks are displayed on an array of shelves,along with daily necessities from soups to nuts.展开更多
Safety profile of 0.0015%tafluprost eye drops in China:a post-marketing observational study Xue-Li Chen,Yan-Jing Fu,Bo Qu,Ye-Wei Wang,Xin Tang,Yu-Hong Wang,Guo-Yi Zhou,Ming-Kai Lin,Jing-Yuan Shen,Jin Yao,Su-Yan Li,Mia...Safety profile of 0.0015%tafluprost eye drops in China:a post-marketing observational study Xue-Li Chen,Yan-Jing Fu,Bo Qu,Ye-Wei Wang,Xin Tang,Yu-Hong Wang,Guo-Yi Zhou,Ming-Kai Lin,Jing-Yuan Shen,Jin Yao,Su-Yan Li,Miao-Qin Wu,Hua-Zong Peng,Ming-Ying Lai,Ren-Yi Wu,Yi-Nong Zhang,Yan Li,Xiao-Jun Wu,Ming-Chang Zhang,Su-Ping Guo and Xing-Huai Sun(Int J Ophthalmol 2023;16(1):108-114.DOI:10.18240/ijo.2023.01.16)The authors would like to make the following change to the above article:The name of the second author Yan-Jing Fu should be modified as“Yan-Jiang Fu”.The authors apologize for any inconvenience caused by this error.展开更多
As more people are choosing to read online,thanks to digital devices that make services fast and convenient,where does that leave traditional reading spaces?
New and clean energy has been a focus to fight against climate change to achieve a clean and just energy transition.Sinopec as one of the largest integrated energy and chemical companies in China,has accelerated the d...New and clean energy has been a focus to fight against climate change to achieve a clean and just energy transition.Sinopec as one of the largest integrated energy and chemical companies in China,has accelerated the development of new energy,especially the hydrogen energy,while maintaining the high-quality development of traditional fossil energy resources.In this regard,it has established a framework with hydrogen energy at its core while developing other new energy sources including solar energy,wind energy,and biomass energy.Hydrogen energy featuring wide availability,high combustion efficiency,convenient storage,and wide application,is a type of clean energy having the potential to replace the fossil energy for transportation,domestic and industrial applications.展开更多
A device is designed to assess the ammonia removal effect of passive air purification products which derived the QB/T 2761-2006 Methods for determination of purificatory effect of indoor environment decontamination pr...A device is designed to assess the ammonia removal effect of passive air purification products which derived the QB/T 2761-2006 Methods for determination of purificatory effect of indoor environment decontamination product.The device is composed of three parts:ammonia generator,ammonia removal device and ammonia collection device,which is made up of common laboratory equipment.The reagents used are common acid and alkali reagents in the laboratory.During the experiment,5.0mL of 25%concentrated ammonia water is added to the ammonia generator as the ammonia source,and filter paper is used as the sample carrier.Take 3.0g sample and add it to the filter paper,after the ammonia is absorbed by the filter paper with the sample,the residual ammonia is collected and measured by acid-base titration.The ammonia removal efficacy of the sample is calculated by the ammonia absorption amount of the blank sample and the sample to be tested.This method has the characteristics of simple equipment,small area,toxic or harmful substance free,and fabulous accuracy.Four different samples were tested,and the results matched the standard method.展开更多
The authors regret to inform that several numbers/variables are mistaken due to clerical errors.1.In the first paragraph of Section 4.4,“For the short duration design with an ED of 98 CA,the EVO was gradually delayed...The authors regret to inform that several numbers/variables are mistaken due to clerical errors.1.In the first paragraph of Section 4.4,“For the short duration design with an ED of 98 CA,the EVO was gradually delayed from 101 to 141 CA”,where“101”should be“107.”2.In the figure caption of Fig.15,where“rI/E”should be“aI/E.”The authors would like to apologize for any inconvenience caused.展开更多
基金supported by the High Value-added Food Technology Development Program in Korea (Grant No. 323002-4)the Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry, Republic of Korea。
文摘Convenience rice has become widely popular due to its easy availability for cooking. This study investigated the starch structure and composition of leachate and the microstructure of reheated convenience rice using novel processing technologies: super-heated steaming(SHS), auto-electric cooking(AEC), and pressurized-steam cooking(PSC). Additionally, the effect of two different target water contents(58% and 63%) was also evaluated. The PSC_63% sample had the highest total solids and amylopectin amount in the leachate. The amylopectin amount in the leachate differed significantly based on the targeted water content. Morphological characterization revealed that the swelling of starch and the coated layer on the surface of rice grains were most pronounced in the PSC_63% sample due to the pressure processing. The textural hardness of the AEC_58% sample was much higher than that of the other samples. The PSC_63% sample had the highest textural adhesiveness value, which can be attributed to the highest amylopectin amount in the leachate. Sensory characterization showed that the PSC_63% sample had the highest glossiness, whiteness, moistness, and overall acceptability. The principal component analysis score plots presented substantial differences in the leachate and textural and sensory characteristics of reheated convenience rice among the different processing technologies.
文摘In this paper, the optimization of micro-cogeneration (μ-CHP) system sizing for convenience stores in Thailand is conducted under the present condition of fuel prices and tariff rates. The assessment of (μ-CHP) system performance is analyzed by using Primary Energy Saving (PES) Ratio for evaluating the energy performance. Also, the Annual Cost Saving Ratio (CSR) and Payback Period (PBP) are used for evaluating the economic performance of μ-CHP system. The analysis results show the optimal size of μ-CHP system under possible conditions including the operating schedule and system’s efficiency were conducted.
基金Sponsored by Social Science Foundation of Hebei Province(HB19YS039).
文摘A walkable urban built environment with convenient facilities is the key to improve the living quality of urban residents and build a livable city in the new era.Taking each urban housing estate as the center and based on walking accessibility,the walking circle of housing estates was constructed.Taking the six functional systems of convenient shopping,catering service,fi nancial service,scientifi c research and education,leisure and entertainment,and medical service as evaluation factors,and considering the actual frequency of residents’use of various public service facilities and the reduction of walking,the convenience evaluation system of public service facilities was established.Taking the urban built environment within the Second Ring Road of Shijiazhuang City,Hebei Province as an example,it is found that the convenience of public service facilities in the walking circle of housing estates within the Second Ring Road presented a circular layer distribution of“low outside and high inside”.This study will provide the reference for urban renewal and renovation and improvement of facilities.
文摘Background: Orthodontics is a dental specialty focusing on correcting dental irregularities and malocclusion. Knowledge and attitudes towards orthodontic treatment are crucial for promoting oral health and overall well-being. Education and awareness play a vital role in ensuring optimal treatment outcomes and improving quality of life. Aim: This study aims to determine the knowledge and attitudes of Kwame Nkrumah University of Science and Technology (KNUST) pre-clinical dentistry students concerning orthodontic therapy. Methodology: This research is a quantitative descriptive cross-sectional study. The research used a non-random convenience sampling method to form the desired sample. For data collection, an interview-administered questionnaire was used over one month. The study set its sights on pre-clinical dental students in KNUST. A total of 150 questionnaires were printed to meet the sample size. Results: The results of the research showed that the knowledge level of KNUST pre-clinical students on orthodontic treatment and its nuances is quite limited. They however had a fair level of knowledge on the disease or ailment that orthodontic treatments solved (especially malocclusion). Their interest in orthodontic treatments on the other hand was quite significant, with a large number having interest in it. Conclusion: To conclude, KNUST pre-clinical students in Ghana although having a limited level of knowledge on orthodontic treatments have a keen interest in undergoing them regardless of the discomforts or the length of time.
基金supported by National Natural Science Foundation of China(41130314,41630968)Knowledge Innovation Program of Chinese Academy of Sciences(Y42217101L)+1 种基金Grants from Qingdao National Laboratory for Marine Science and Technology(2015ASKJ03)the NSFC-Shandong Joint Fund for Marine Science Research Centers(U1606401)
文摘The idea of lithosphere delamination has long been conceived as a mechanism to cause tectonic uplift,metamorphism and magmatism in active orogenic belts[1–3].Since the publication of the two seminal papers by Davies and von Blanckenburg[4,5],the idea of slab breakoff has been more widely accepted over the last$20 years as the favored mechanism to cause collision zone mag-
文摘BACKGROUND: The route of most systemic diseases begins in the oral cavity. Oral health knowledge of mouthwashes and their uses is indispensable for the general population and especially adolescents. The use of mouthwash by adolescents can be a beneficial adjunct to their oral hygiene routine, providing additional protection against dental diseases and promoting fresher breath. Overuse or misuse of mouthwash, particularly those containing alcohol or other potentially irritating ingredients, may lead to adverse effects such as oral mucosal irritation, dry mouth, or alteration of the oral microbiome. OBJECTIVES: To determine the knowledge, attitude, and use of mouthwash among senior high school students in Kumasi. METHODOLOGY: 120 students responded to a standard questionnaire by a convenient sample technique. The Statistical Package for Social Sciences (SPSS) 22.0 and MS Excel were used for data management and analysis. The results of the study were presented using tables, bar charts, and pie chart. RESULTS: The ages of the respondents ranged from 14 to 20 years. Out of the 120 participants, 71 students that represent 59.2% of the total, used mouthwash. Majority of the participants (63%) utilized a mouthwash after brushing their teeth. 49% of the participants reported using mouthwash to address halitosis, 37% used it to combat periodontal disease, and 10% used it for relief from a sore throat. CONCLUSION: In general, most of the participants who use mouthwash had excellent knowledge and a positive attitude toward the use of mouthwash.
文摘On Shenzhen,Guangdong Province,a city known for its tech innovation,residents have recently adopted helicopters as“air taxis”alongside buses,cabs and the subway.On board these air taxis,passengers are treated to panoramic views of the city’s picturesque landscapes,making their journeys both convenient and alluring.
基金This research was supported by the National Natural Science Foundation of China(No.G71390334)Beijing Social Science Fund(No.16JDGLB012)Beijing Logistics Informatics Research Base.
文摘Convenience vegetable stores are distributed in various districts of the city,which is difficult to distribute,mainly reflected in the high cost of distribution and transportation.In order to solve this problem,combining with the characteristics of convenience vegetable stores and urban transportation,an optimization model of distribution route considering transit nodes is established.The model takes into account both soft time window and hard time window.Soft time window is used to calculate the cost increase caused by an urban traffic jam.Hard time window is the unified service time of convenience vegetable stores,and the cost of transit damage is considered to make the model more realistic.The genetic algorithm is used to solve the model with a onestage solution method.The effectiveness and feasibility of the model and algorithm are verified by an example.The effectiveness of the proposed algorithm is verified by comparing the optimal solutions in the case of setting up transit and not setting up transit.The result shows that when the number of convenience vegetable stores is large,the establishment of transit can reduce the overall transportation cost.Quantitative analysis shows that with the further increase in convenience vegetable stores in cities,the distribution of convenience vegetable stores can be improved by planning scientific path and by increasing transit nodes.
基金This work is supported by the Natural Science Foundation of China(No.71872174).
文摘This paper analyzes the key issues of resource integration,and proposes a method for solving the problem of achieving efficient resource integration for convenience service platforms that adopt dynamic service modes.This method considers both the service level of collaborative resources under dynamic service modes,and collaborative resources’satisfaction of service modes in the resource integration.In addition,dominant factors needing the most attention during resource integration under dynamic service modes are excavated.Moreover,a model for resource integration optimization is established,and ant colony algorithm is used to solve the problem.Finally,a case is used to verify the feasibility of the method.
文摘With the continuous advancement of science and technology,our lifestyles are undergoing significant changes,with wearable technology emerging as a captivating trend.In this digital era,there is a growing demand for solutions that cater to people’s needs for health and comfort.The wearable inflatable massage chair represents one such innovation designed to meet these evolving needs.This project is focused on creating a“wearable and portable massage chair”that is both convenient and lightweight.It serves as a massage solution particularly beneficial for the elderly and sedentary individuals.This innovative chair can be used by the elderly during outings or errands,as well as by office workers on business trips,while driving,or commuting via subway.Users can simply lean against the seat or a wall,enjoying moments of relaxation amid the busy and fast-paced modern era.
文摘When Malawian President Lazarus Chakwera delivered a State of the Nation Address at the 50th Parliamentary Session and Budget Meeting in February,tourism was top of mind.
文摘In Shenzhen,Guangdong Province,a city known for its tech innovation,residents have recently adopted helicopters as“air taxis”alongside buses,cabs and the subway.On board these air taxis,passengers are treated to panoramic views of the city’s picturesque landscapes,making their journeys both convenient and alluring.
文摘Investors eye business opportunities as China focuses on convenience store development Twenty years ago,convenience stores were a newly sprouted phenomenon in China.Baishi Bianli,a Hong Kong invested brand,opened the first Western-style convenience store in Shanghai in 1993 with great fanfare.A Shanghai-based newspaper reported,"Snacks are displayed on an array of shelves,along with daily necessities from soups to nuts.
文摘Safety profile of 0.0015%tafluprost eye drops in China:a post-marketing observational study Xue-Li Chen,Yan-Jing Fu,Bo Qu,Ye-Wei Wang,Xin Tang,Yu-Hong Wang,Guo-Yi Zhou,Ming-Kai Lin,Jing-Yuan Shen,Jin Yao,Su-Yan Li,Miao-Qin Wu,Hua-Zong Peng,Ming-Ying Lai,Ren-Yi Wu,Yi-Nong Zhang,Yan Li,Xiao-Jun Wu,Ming-Chang Zhang,Su-Ping Guo and Xing-Huai Sun(Int J Ophthalmol 2023;16(1):108-114.DOI:10.18240/ijo.2023.01.16)The authors would like to make the following change to the above article:The name of the second author Yan-Jing Fu should be modified as“Yan-Jiang Fu”.The authors apologize for any inconvenience caused by this error.
文摘As more people are choosing to read online,thanks to digital devices that make services fast and convenient,where does that leave traditional reading spaces?
文摘New and clean energy has been a focus to fight against climate change to achieve a clean and just energy transition.Sinopec as one of the largest integrated energy and chemical companies in China,has accelerated the development of new energy,especially the hydrogen energy,while maintaining the high-quality development of traditional fossil energy resources.In this regard,it has established a framework with hydrogen energy at its core while developing other new energy sources including solar energy,wind energy,and biomass energy.Hydrogen energy featuring wide availability,high combustion efficiency,convenient storage,and wide application,is a type of clean energy having the potential to replace the fossil energy for transportation,domestic and industrial applications.
文摘A device is designed to assess the ammonia removal effect of passive air purification products which derived the QB/T 2761-2006 Methods for determination of purificatory effect of indoor environment decontamination product.The device is composed of three parts:ammonia generator,ammonia removal device and ammonia collection device,which is made up of common laboratory equipment.The reagents used are common acid and alkali reagents in the laboratory.During the experiment,5.0mL of 25%concentrated ammonia water is added to the ammonia generator as the ammonia source,and filter paper is used as the sample carrier.Take 3.0g sample and add it to the filter paper,after the ammonia is absorbed by the filter paper with the sample,the residual ammonia is collected and measured by acid-base titration.The ammonia removal efficacy of the sample is calculated by the ammonia absorption amount of the blank sample and the sample to be tested.This method has the characteristics of simple equipment,small area,toxic or harmful substance free,and fabulous accuracy.Four different samples were tested,and the results matched the standard method.
文摘The authors regret to inform that several numbers/variables are mistaken due to clerical errors.1.In the first paragraph of Section 4.4,“For the short duration design with an ED of 98 CA,the EVO was gradually delayed from 101 to 141 CA”,where“101”should be“107.”2.In the figure caption of Fig.15,where“rI/E”should be“aI/E.”The authors would like to apologize for any inconvenience caused.