Although water and energy resources are well-recognized concerns regarding economic and social development sustainability, little specific research has focused on both water and energy problems at the same time. This ...Although water and energy resources are well-recognized concerns regarding economic and social development sustainability, little specific research has focused on both water and energy problems at the same time. This study analyzed the water and electricity-use patterns in Shenzhen, South China during 2001-2009. A curve regression method was used to examine the relationship between water and electricity use per gross domestic product （GDP） in Shenzhen and its three sectors, i.e., agriculture, industry ＆ construction, and residential life ＆ services. Results showed that agriculture only covered less than 10% of water and electricity use in Shenzhen, while industry ＆ construction and residential life ＆ services accounted for more than 90% of water and electricity use in Shenzhen, which coincided with the city＇s industrial structure. The water and electricity use per GDP in agriculture was the biggest among three sectors in Shenzhen during 2001-2009, which means inefficiency of water and electricity use in agriculture. Due to transitioning to advanced materials and manufacturing, both water and electricity use per GDP their utilization efficiencies gradually increased over time. in industry ＆ construction decreased during 2001-2009 and The same held true for those in residential life ＆ services transformed toward modern business, creative culture, finance services, etc. Derived from the survival of the fittest in competing for limited water and electricity resources, agriculture in Shenzhen has been gradually substituted by industry ＆ construction and residential life ＆ services, with much higher efficiencies of water and electricity use. And traditional agriculture will not be sustainable in the process of urbanization and industrialization, except high-tech intensive agriculture with low water and energy cost. Furthermore, by means of curve regression, we found that there was a significant quadratic relationship between water use per GDP and electricity use per GDP in the entire city and its three sectors. Suitable industrial transformation and advancement was a very effective way to save water and energy for modern cities. This can provide some reference for systematic planning and design of water and electricity allocation and use in agriculture, industry ＆ construction and residential life ＆ services in a city.展开更多
Accessing drinking water is a global issue. This study aims to contribute to the assessment of groundwater quality in the municipality of Za-Kpota (southern Benin) using remote sensing and Machine Learning. The method...Accessing drinking water is a global issue. This study aims to contribute to the assessment of groundwater quality in the municipality of Za-Kpota (southern Benin) using remote sensing and Machine Learning. The methodological approach used consisted in linking groundwater physico-chemical parameter data collected in the field and in the laboratory using AFNOR 1994 standardized methods to satellite data (Landsat) in order to sketch out a groundwater quality prediction model. The data was processed using QGis (Semi-Automatic Plugin: SCP) and Python (Jupyter Netebook: Prediction) softwares. The results of water analysis from the sampled wells and boreholes indicated that most of the water is acidic (pH varying between 5.59 and 7.83). The water was moderately mineralized, with conductivity values of less than 1500 μs/cm overall (59 µS/cm to 1344 µS/cm), with high concentrations of nitrates and phosphates in places. The dynamics of groundwater quality in the municipality of Za-Kpota between 2008 and 2022 are also marked by a regression in land use units (a regression in vegetation and marshland formation in favor of built-up areas, bare soil, crops and fallow land) revealed by the diachronic analysis of satellite images from 2008, 2013, 2018 and 2022. Surveys of local residents revealed the use of herbicides and pesticides in agricultural fields, which are the main drivers contributing to the groundwater quality deterioration observed in the study area. Field surveys revealed the use of herbicides and pesticides in agricultural fields, which are factors contributing to the deterioration in groundwater quality observed in the study area. The results of the groundwater quality prediction models (ANN, RF and LR) developed led to the conclusion that the model based on Artificial Neural Networks (ANN: R2 = 0.97 and RMSE = 0) is the best for groundwater quality changes modelling in the Za-Kpota municipality.展开更多
Injection is said to be safe when causing no harm to the recipient, and it does not expose provider to avoidable risk and does not result in any waste that is dangerous for other people. Purpose: The study was carried...Injection is said to be safe when causing no harm to the recipient, and it does not expose provider to avoidable risk and does not result in any waste that is dangerous for other people. Purpose: The study was carried out to determine the perspectives of the Saudi health care providers on the safe use and disposal of injection. Methods: Prospective cross sectional survey was used, structured interviews were carried out by the use of pretested questionnaire to elicit general opinions on injection practices skills, and disposal processes in different health settings in Taif Area. Results: Females were dominant injection providers 82.3%. About 80% of providers tend to discard single use injection at once after administration and 84% tend to safely dispose them. Hygienic measures were well maintained. Increased used pattern of injection was observed 46%. Providers were well satisfied by the measures adopted to curb after using hazards. High rate of injection sticks 74.3% was observed. Conclusion: Although some measures of safe disposal were maintained by Saudi injections’ providers, still some regulation efforts should be done to curb spreading out of infection due to mal use and disposal of injection.展开更多
In Brazil, the National Policy on Medicinal Plants has stimulated the use of plants in primary health care, validating the traditional medicine and pointing to the lack of a consistent set of evidence that supports th...In Brazil, the National Policy on Medicinal Plants has stimulated the use of plants in primary health care, validating the traditional medicine and pointing to the lack of a consistent set of evidence that supports their uses and indications by ethnobotany and ethnopharmacology. This paper aims to make a systematic review of the scientific literature to gather evidence on indications and safety of use of extracts of Solidago chilensis. The bibliographic research was carried out using terms derivate from the title, and all the published papers were downloaded, covering at least the last five years, and it was focused on preclinical and clinical studies with extracts of S. chilensis in the databases of Web of Science, BIREME, SciELO, PubMed, Scirus and Highwire. Phytochemical analysis carried out on many studies showed that among the chemical constituents of S. chilensis are sesqui- and diterpenes, flavonoids and other substances, and the diterpene solidagenone was identified as a marker of the extract that has demonstrated gastroprotective activity in different experimental models of ulcer induced in animals without signs of toxicity at doses above 600 mg/kg. Another studies show that the anti-inflammatory effect in rats has been given by inhibiting the exudation of leukocytes, especially neutrophils, as well as through inhibition of myeloperoxidase, adenosine deaminase, and tumor necrosis factor-α (TNF-α), decreased induction of nitric oxide synthesis and levels of interleukin-1β. Studies show that solidagenone at a concentration of 100 mg/kg showed activity similar to lansoprazole (20 mg/kg), the effect occurs without changes in the gastric mucosa or on acid secretion. The aqueous and alcoholic extracts showed anti-inflammatory activity and may act in a satisfactory way in cases involving the inflammatory response, such as injuries due to trauma, repetitive stress, pain, and healing. The inhibition of anti-inflammatory response is on the base of all these described effects. In spite of the fact that S. chilensis has been used since ancient times in Brazilian traditional medicine, and the existence of preclinical pharmacological end toxicological evidence for its efficacy as an inhibitor of anti-inflammatory response, we could find only a single clinical trial study carried out in treating lumbago. In this lack of clinical pharmacology and toxicology evidence for its uses, its safety and therapeutic indications are guaranteed, up to this moment, by traditional knowledge.展开更多
On March 13th,Reuters reported that the long run version of Tesla Model 3 will use permanent magnet motors.One of the materials for this type of motor is rare earth metal neodymium,which will further increase the supp...On March 13th,Reuters reported that the long run version of Tesla Model 3 will use permanent magnet motors.One of the materials for this type of motor is rare earth metal neodymium,which will further increase the supply pressure of neodymium.Governments around the world are committed to reducing the harmful emissions produced by fossil fuel cars,pushing up demand for electric vehicles展开更多
Although most people believe that herbal remedies are relatively safe to use, some are toxic or possess adverse reactions, especially when used incorrectly.Commonly used TCM herbs with known adverse reactions, as well...Although most people believe that herbal remedies are relatively safe to use, some are toxic or possess adverse reactions, especially when used incorrectly.Commonly used TCM herbs with known adverse reactions, as well as the most toxic herbs in the Pharmacopoeia of People’s Republic of China are listed as follows:展开更多
A comparative study of the needle-to-liquid plasma in the continuous mode with DC and AC excitations is detailed in this paper. All plasmas studied here are shown to be glow discharges. This study is based on measurem...A comparative study of the needle-to-liquid plasma in the continuous mode with DC and AC excitations is detailed in this paper. All plasmas studied here are shown to be glow discharges. This study is based on measurements of several key parameters, including electrical energy, optical emission intensities of active species, rotational and vibrational temperatures, and temperatures of the needle and liquid electrodes. AC plasmas can produce 1.2～5 times higher excited state active species than DC plasmas under the same dissipated power. AC excited liquid plasmas have the highest energy utilization efficiency among the three systems （AC excited plasmas, DC excited plasmas with water anode and DC excited plasmas with water cathode）; most of the energy is used to produce useful species rather than to heat the electrodes and plasmas.展开更多
The present paper deals with a model design through Unified Modeling Language (UML) for a mobile based elec-tricity bill deposit system. Due to complex life style of people this model is proposed in the form of UML Cl...The present paper deals with a model design through Unified Modeling Language (UML) for a mobile based elec-tricity bill deposit system. Due to complex life style of people this model is proposed in the form of UML Class, Sequence and Use Case diagrams. For implementation of proposed model, a real case study of Uttar Pradesh Electricity Bill deposit System is considered. By the use of this model, one can display the status of deposited electricity bill on a hand held mobile device system.展开更多
The performance of a 3-phase 6-pole 400 W inverter-drive induction motor was investigated using a variety of non-oriented electrical steels for stator core at PWM inverter fundamental wave frequencies of 30 to 300 Hz....The performance of a 3-phase 6-pole 400 W inverter-drive induction motor was investigated using a variety of non-oriented electrical steels for stator core at PWM inverter fundamental wave frequencies of 30 to 300 Hz. There existed an optimum Si content of the material depending on the tooth flux density. Both reduction of material thickness and stress-relief annealing of the stator core improved the motor efficiency. The influence of Si content on the efficiency was small at lower PWM frequencies, while at higher frequencies the motor efficiency increased with increasing Si content. The Cu loss WC increased and the Fe loss Wi counteractiveiy decreasedwith increasing Si content at lower frequencies; while at higher frequencies Wi had dominant effect on the efficiency. Newly developed materials RMA, having lower Fe losses after stress-relief annealing and higher flux densities with lower Si contents, showed motor efficiencies superior to conventional J1S grade materials with comparable Fe losses.展开更多
Chan su (Venenum Bufonis,蟾酥)Its main active and toxic constituent is bufotoxin, which has a function similar to digitalis glycosides.Adverse reactions and toxicity: Chan su, althoughit is used in patent preparations...Chan su (Venenum Bufonis,蟾酥)Its main active and toxic constituent is bufotoxin, which has a function similar to digitalis glycosides.Adverse reactions and toxicity: Chan su, althoughit is used in patent preparations, is traditionally known for its toxicity and is seldom used in decoctions. Toxicity is often due to over dosage of the patents, such as Liushenwan (六神丸) and Houzhengwan (喉症丸). After administration展开更多
Xing ren (Semen Armeniacae Amarum, 杏仁) and Tao ren (Semen Persicae,桃仁)Both are seeds of fruits in Rosaceae. Both contain oils, amygdalin and emullsin.Adverse reactions and toxicity: Amygdalin is the main toxic con...Xing ren (Semen Armeniacae Amarum, 杏仁) and Tao ren (Semen Persicae,桃仁)Both are seeds of fruits in Rosaceae. Both contain oils, amygdalin and emullsin.Adverse reactions and toxicity: Amygdalin is the main toxic constituent, which can be decomposed to hydrocyanic acid. Toxicity is dose related; 55 - 60 pieces of Xing ren, containing approxi-展开更多
基金supported by the Project of Philosophy and Social Science of Shenzhen City of China during the 12th Five-Year Plan period(125A019and125A037)
文摘Although water and energy resources are well-recognized concerns regarding economic and social development sustainability, little specific research has focused on both water and energy problems at the same time. This study analyzed the water and electricity-use patterns in Shenzhen, South China during 2001-2009. A curve regression method was used to examine the relationship between water and electricity use per gross domestic product （GDP） in Shenzhen and its three sectors, i.e., agriculture, industry ＆ construction, and residential life ＆ services. Results showed that agriculture only covered less than 10% of water and electricity use in Shenzhen, while industry ＆ construction and residential life ＆ services accounted for more than 90% of water and electricity use in Shenzhen, which coincided with the city＇s industrial structure. The water and electricity use per GDP in agriculture was the biggest among three sectors in Shenzhen during 2001-2009, which means inefficiency of water and electricity use in agriculture. Due to transitioning to advanced materials and manufacturing, both water and electricity use per GDP their utilization efficiencies gradually increased over time. in industry ＆ construction decreased during 2001-2009 and The same held true for those in residential life ＆ services transformed toward modern business, creative culture, finance services, etc. Derived from the survival of the fittest in competing for limited water and electricity resources, agriculture in Shenzhen has been gradually substituted by industry ＆ construction and residential life ＆ services, with much higher efficiencies of water and electricity use. And traditional agriculture will not be sustainable in the process of urbanization and industrialization, except high-tech intensive agriculture with low water and energy cost. Furthermore, by means of curve regression, we found that there was a significant quadratic relationship between water use per GDP and electricity use per GDP in the entire city and its three sectors. Suitable industrial transformation and advancement was a very effective way to save water and energy for modern cities. This can provide some reference for systematic planning and design of water and electricity allocation and use in agriculture, industry ＆ construction and residential life ＆ services in a city.
文摘Accessing drinking water is a global issue. This study aims to contribute to the assessment of groundwater quality in the municipality of Za-Kpota (southern Benin) using remote sensing and Machine Learning. The methodological approach used consisted in linking groundwater physico-chemical parameter data collected in the field and in the laboratory using AFNOR 1994 standardized methods to satellite data (Landsat) in order to sketch out a groundwater quality prediction model. The data was processed using QGis (Semi-Automatic Plugin: SCP) and Python (Jupyter Netebook: Prediction) softwares. The results of water analysis from the sampled wells and boreholes indicated that most of the water is acidic (pH varying between 5.59 and 7.83). The water was moderately mineralized, with conductivity values of less than 1500 μs/cm overall (59 µS/cm to 1344 µS/cm), with high concentrations of nitrates and phosphates in places. The dynamics of groundwater quality in the municipality of Za-Kpota between 2008 and 2022 are also marked by a regression in land use units (a regression in vegetation and marshland formation in favor of built-up areas, bare soil, crops and fallow land) revealed by the diachronic analysis of satellite images from 2008, 2013, 2018 and 2022. Surveys of local residents revealed the use of herbicides and pesticides in agricultural fields, which are the main drivers contributing to the groundwater quality deterioration observed in the study area. Field surveys revealed the use of herbicides and pesticides in agricultural fields, which are factors contributing to the deterioration in groundwater quality observed in the study area. The results of the groundwater quality prediction models (ANN, RF and LR) developed led to the conclusion that the model based on Artificial Neural Networks (ANN: R2 = 0.97 and RMSE = 0) is the best for groundwater quality changes modelling in the Za-Kpota municipality.
文摘Injection is said to be safe when causing no harm to the recipient, and it does not expose provider to avoidable risk and does not result in any waste that is dangerous for other people. Purpose: The study was carried out to determine the perspectives of the Saudi health care providers on the safe use and disposal of injection. Methods: Prospective cross sectional survey was used, structured interviews were carried out by the use of pretested questionnaire to elicit general opinions on injection practices skills, and disposal processes in different health settings in Taif Area. Results: Females were dominant injection providers 82.3%. About 80% of providers tend to discard single use injection at once after administration and 84% tend to safely dispose them. Hygienic measures were well maintained. Increased used pattern of injection was observed 46%. Providers were well satisfied by the measures adopted to curb after using hazards. High rate of injection sticks 74.3% was observed. Conclusion: Although some measures of safe disposal were maintained by Saudi injections’ providers, still some regulation efforts should be done to curb spreading out of infection due to mal use and disposal of injection.
文摘In Brazil, the National Policy on Medicinal Plants has stimulated the use of plants in primary health care, validating the traditional medicine and pointing to the lack of a consistent set of evidence that supports their uses and indications by ethnobotany and ethnopharmacology. This paper aims to make a systematic review of the scientific literature to gather evidence on indications and safety of use of extracts of Solidago chilensis. The bibliographic research was carried out using terms derivate from the title, and all the published papers were downloaded, covering at least the last five years, and it was focused on preclinical and clinical studies with extracts of S. chilensis in the databases of Web of Science, BIREME, SciELO, PubMed, Scirus and Highwire. Phytochemical analysis carried out on many studies showed that among the chemical constituents of S. chilensis are sesqui- and diterpenes, flavonoids and other substances, and the diterpene solidagenone was identified as a marker of the extract that has demonstrated gastroprotective activity in different experimental models of ulcer induced in animals without signs of toxicity at doses above 600 mg/kg. Another studies show that the anti-inflammatory effect in rats has been given by inhibiting the exudation of leukocytes, especially neutrophils, as well as through inhibition of myeloperoxidase, adenosine deaminase, and tumor necrosis factor-α (TNF-α), decreased induction of nitric oxide synthesis and levels of interleukin-1β. Studies show that solidagenone at a concentration of 100 mg/kg showed activity similar to lansoprazole (20 mg/kg), the effect occurs without changes in the gastric mucosa or on acid secretion. The aqueous and alcoholic extracts showed anti-inflammatory activity and may act in a satisfactory way in cases involving the inflammatory response, such as injuries due to trauma, repetitive stress, pain, and healing. The inhibition of anti-inflammatory response is on the base of all these described effects. In spite of the fact that S. chilensis has been used since ancient times in Brazilian traditional medicine, and the existence of preclinical pharmacological end toxicological evidence for its efficacy as an inhibitor of anti-inflammatory response, we could find only a single clinical trial study carried out in treating lumbago. In this lack of clinical pharmacology and toxicology evidence for its uses, its safety and therapeutic indications are guaranteed, up to this moment, by traditional knowledge.
文摘On March 13th,Reuters reported that the long run version of Tesla Model 3 will use permanent magnet motors.One of the materials for this type of motor is rare earth metal neodymium,which will further increase the supply pressure of neodymium.Governments around the world are committed to reducing the harmful emissions produced by fossil fuel cars,pushing up demand for electric vehicles
文摘Although most people believe that herbal remedies are relatively safe to use, some are toxic or possess adverse reactions, especially when used incorrectly.Commonly used TCM herbs with known adverse reactions, as well as the most toxic herbs in the Pharmacopoeia of People’s Republic of China are listed as follows:
基金supported by National Natural Science Foundation of China(No.51207027)Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry of China
文摘A comparative study of the needle-to-liquid plasma in the continuous mode with DC and AC excitations is detailed in this paper. All plasmas studied here are shown to be glow discharges. This study is based on measurements of several key parameters, including electrical energy, optical emission intensities of active species, rotational and vibrational temperatures, and temperatures of the needle and liquid electrodes. AC plasmas can produce 1.2～5 times higher excited state active species than DC plasmas under the same dissipated power. AC excited liquid plasmas have the highest energy utilization efficiency among the three systems （AC excited plasmas, DC excited plasmas with water anode and DC excited plasmas with water cathode）; most of the energy is used to produce useful species rather than to heat the electrodes and plasmas.
文摘The present paper deals with a model design through Unified Modeling Language (UML) for a mobile based elec-tricity bill deposit system. Due to complex life style of people this model is proposed in the form of UML Class, Sequence and Use Case diagrams. For implementation of proposed model, a real case study of Uttar Pradesh Electricity Bill deposit System is considered. By the use of this model, one can display the status of deposited electricity bill on a hand held mobile device system.
文摘The performance of a 3-phase 6-pole 400 W inverter-drive induction motor was investigated using a variety of non-oriented electrical steels for stator core at PWM inverter fundamental wave frequencies of 30 to 300 Hz. There existed an optimum Si content of the material depending on the tooth flux density. Both reduction of material thickness and stress-relief annealing of the stator core improved the motor efficiency. The influence of Si content on the efficiency was small at lower PWM frequencies, while at higher frequencies the motor efficiency increased with increasing Si content. The Cu loss WC increased and the Fe loss Wi counteractiveiy decreasedwith increasing Si content at lower frequencies; while at higher frequencies Wi had dominant effect on the efficiency. Newly developed materials RMA, having lower Fe losses after stress-relief annealing and higher flux densities with lower Si contents, showed motor efficiencies superior to conventional J1S grade materials with comparable Fe losses.
文摘Chan su (Venenum Bufonis,蟾酥)Its main active and toxic constituent is bufotoxin, which has a function similar to digitalis glycosides.Adverse reactions and toxicity: Chan su, althoughit is used in patent preparations, is traditionally known for its toxicity and is seldom used in decoctions. Toxicity is often due to over dosage of the patents, such as Liushenwan (六神丸) and Houzhengwan (喉症丸). After administration
文摘Xing ren (Semen Armeniacae Amarum, 杏仁) and Tao ren (Semen Persicae,桃仁)Both are seeds of fruits in Rosaceae. Both contain oils, amygdalin and emullsin.Adverse reactions and toxicity: Amygdalin is the main toxic constituent, which can be decomposed to hydrocyanic acid. Toxicity is dose related; 55 - 60 pieces of Xing ren, containing approxi-
