Pub Date : 2018-01-28DOI: 10.17265/1934-7375/2018.01.005
S. Kurta, I. Mykytyn, A. Voronych, Viktoria Ribun
Ivano-Frankivsk oblast is located in the south-western part of Ukraine, close to the geographical center of Europe at the junction of the two major geographic units, the East European Plain and the Eastern Carpathians (the Carpathian region of Ukraine). Between September 2013 and September 2015, the expert group of the Department of Organic and Analytical Chemistry of Vasyl Stefanyk Precarpathian National University conducted the mobile monitoring of air cleanliness in Ivano-Frankivsk region; the authors monitored the level of air contamination with seven gases: carbon monoxide and dioxide, sulfur dioxide, nitrogen dioxide, hydrogen sulfide, ammonia, formaldehyde, beta-particles, and gamma radiation. For this purpose, there were used six automatic analyzers “Dozor-C-P”, the formaldehyde Gas Analyzer “МІС-98170”, and the radiometer “TERRA”. The monitoring resulted in the making of three maps of Ivano-Frankivsk region, on which the average levels of concentration of three particular gases (CO2, SO2, and CH2O) throughout all the districts of the oblast were marked. There was registered the excess of CH2O limits—the consequences of the presence of the chipboard and wood-fiber production, for which formaldehyde is used as a raw material. Also there was observed the excess of SO2 in the air caused by gas fumes from vehicles and thermal power stations.
{"title":"Monitoring Ambient Air Quality in the Carpathian Region of Ukraine","authors":"S. Kurta, I. Mykytyn, A. Voronych, Viktoria Ribun","doi":"10.17265/1934-7375/2018.01.005","DOIUrl":"https://doi.org/10.17265/1934-7375/2018.01.005","url":null,"abstract":"Ivano-Frankivsk oblast is located in the south-western part of Ukraine, close to the geographical center of Europe at the junction of the two major geographic units, the East European Plain and the Eastern Carpathians (the Carpathian region of Ukraine). Between September 2013 and September 2015, the expert group of the Department of Organic and Analytical Chemistry of Vasyl Stefanyk Precarpathian National University conducted the mobile monitoring of air cleanliness in Ivano-Frankivsk region; the authors monitored the level of air contamination with seven gases: carbon monoxide and dioxide, sulfur dioxide, nitrogen dioxide, hydrogen sulfide, ammonia, formaldehyde, beta-particles, and gamma radiation. For this purpose, there were used six automatic analyzers “Dozor-C-P”, the formaldehyde Gas Analyzer “МІС-98170”, and the radiometer “TERRA”. The monitoring resulted in the making of three maps of Ivano-Frankivsk region, on which the average levels of concentration of three particular gases (CO2, SO2, and CH2O) throughout all the districts of the oblast were marked. There was registered the excess of CH2O limits—the consequences of the presence of the chipboard and wood-fiber production, for which formaldehyde is used as a raw material. Also there was observed the excess of SO2 in the air caused by gas fumes from vehicles and thermal power stations.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46046099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-28DOI: 10.17265/1934-7375/2018.01.001
David S. Chung, Hanna Kim, Jonathan Ko, Justine Lee, Bryant Hwang, Sohyun Chang, Byungjun Kim, Sung‐Jae Chung
{"title":"Microwave Synthesis of Silver Nanoparticles Using Different Pentose Carbohydrates as Reducing Agents","authors":"David S. Chung, Hanna Kim, Jonathan Ko, Justine Lee, Bryant Hwang, Sohyun Chang, Byungjun Kim, Sung‐Jae Chung","doi":"10.17265/1934-7375/2018.01.001","DOIUrl":"https://doi.org/10.17265/1934-7375/2018.01.001","url":null,"abstract":"","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44741598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-28DOI: 10.17265/1934-7375/2017.04.004
Debasree Paul, S. Das, T. Islam, Md. Abu Bakar Siddiquee, M. Mamun
The effect of alkali concentrations has been studied on the color strength (K/S) and color fastness properties of single jersey cotton knitted fabrics dyed with 1% Novacron Red S-B reactive dye. Same bath scouring and bleaching are performed and conventional exhaust dyeing method employed by IR laboratory sample dyeing machine. Various alkali concentrations such as 6, 7, 8, 9 and 10 g/L are employed and other parameters are kept fixed. The color strength (K/S) and color fastness to wash and rubbing are examined and evaluated. It is revealed that with the increase in alkali concentration from 6 g/L to 8 g/L the value of K/S increases and then up to 10 g/L the value decreases. The overall color fastness properties to washing and rubbing for the dyed samples range from good to excellent.
研究了碱浓度对1%Novacron Red S-B活性染料染色纯棉针织物的色强度（K/S）和色牢度的影响。采用同浴煮漂法，在红外实验室样品染色机上采用常规排气染色法。使用各种碱浓度，例如6、7、8、9和10g/L，并且其它参数保持固定。检测并评价了色强度（K/S）和耐洗涤和耐摩擦色牢度。结果表明，随着碱浓度从6g/L增加到8g/L，K/S值增加，然后增加到10g/L，K/S值减小。染色样品的耐洗涤和摩擦的整体色牢度从良好到优异不等。
{"title":"Effect of Alkali Concentration on Dyeing Cotton Knitted Fabrics with Reactive Dyes","authors":"Debasree Paul, S. Das, T. Islam, Md. Abu Bakar Siddiquee, M. Mamun","doi":"10.17265/1934-7375/2017.04.004","DOIUrl":"https://doi.org/10.17265/1934-7375/2017.04.004","url":null,"abstract":"The effect of alkali concentrations has been studied on the color strength (K/S) and color fastness properties of single jersey cotton knitted fabrics dyed with 1% Novacron Red S-B reactive dye. Same bath scouring and bleaching are performed and conventional exhaust dyeing method employed by IR laboratory sample dyeing machine. Various alkali concentrations such as 6, 7, 8, 9 and 10 g/L are employed and other parameters are kept fixed. The color strength (K/S) and color fastness to wash and rubbing are examined and evaluated. It is revealed that with the increase in alkali concentration from 6 g/L to 8 g/L the value of K/S increases and then up to 10 g/L the value decreases. The overall color fastness properties to washing and rubbing for the dyed samples range from good to excellent.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49323417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-28DOI: 10.17265/1934-7375/2017.04.002
Carlos Eugênio Fortes Teixeira, R. S. Fontaneli
Winter cereals are cultivated in order to produce grain for food and feed, green forage and haylage for cattle. The objectives of this study are to assay the production and chemical characteristics bromatological of winter cereal forages. The factorial arrangement of treatments 5 × 2 (5 cultivars and two cutting heights—low 7-10 cm and 20 cm from the soil surface) harvested when the grain was at the dough stage. Genetic materials tested were rye BRS Serrano, wheat BRS Umbu and BRS Pastoreio, triticale BRS Saturno, barley BRS Aliensa and Brevis oats BRS Centauro. The experimental design was a randomized complete block design with four replications. The assay carried out to forage, BRS Centauro showed oat forage yield higher than the other genotypes. Barley BRS Aliensa stood out for DMD (dry matter digestibility) and CP (crude protein) for the two tested cutting heights. BRS Pastoreio wheat had lower NDF (neutral detergent fiber) concentration than BRS Serrano rye.
{"title":"Chemical bromatological evaluation of biomass for silage of the winter cereals.","authors":"Carlos Eugênio Fortes Teixeira, R. S. Fontaneli","doi":"10.17265/1934-7375/2017.04.002","DOIUrl":"https://doi.org/10.17265/1934-7375/2017.04.002","url":null,"abstract":"Winter cereals are cultivated in order to produce grain for food and feed, green forage and haylage for cattle. The objectives of this study are to assay the production and chemical characteristics bromatological of winter cereal forages. The factorial arrangement of treatments 5 × 2 (5 cultivars and two cutting heights—low 7-10 cm and 20 cm from the soil surface) harvested when the grain was at the dough stage. Genetic materials tested were rye BRS Serrano, wheat BRS Umbu and BRS Pastoreio, triticale BRS Saturno, barley BRS Aliensa and Brevis oats BRS Centauro. The experimental design was a randomized complete block design with four replications. The assay carried out to forage, BRS Centauro showed oat forage yield higher than the other genotypes. Barley BRS Aliensa stood out for DMD (dry matter digestibility) and CP (crude protein) for the two tested cutting heights. BRS Pastoreio wheat had lower NDF (neutral detergent fiber) concentration than BRS Serrano rye.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45762645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-28DOI: 10.17265/1934-7375/2017.04.003
A. Adebola, Davies Caleb Adeosun, Abiona Dupe Lydia
Spices which are widely used in Southwest Nigeria have aroma, enhance taste of food and possess medicinal values. Proximate, mineral composition and phytochemical screening of ten randomly selected spices were carried out. Recommended procedures were used for the analyses. Mineral composition was determined using flame photometer, colorimeter and (Atomic Absorption Spectrophotometer). The proximate composition showed that protein was high at 12.04% in Zingiber officinale and low at 2.1% in Xylopia aethiopica. Ocimium gratissium contained high moisture content at 82.1%, while Tetrapleura tetraptera had the least value of 3.5%. High ash content was recorded in Ocimum gratissium at 13.68% and lowest 0.98% in Allium cepa. For carbohydrate, Allium cepa had the highest value of 78.36%, while Allium setiva had the least value of 19.48%. Mineral composition showed high value of calcium 712 mg/100g, magnesium 172.2 mg/100g, potassium 868.5 mg/100g, sodium 75.85 mg/100g, and manganese 95.38 mg/100g in Allium sativa, Xylopia aethiopica, Momodara myristica, Ocimum gratissimum, Tetrapleura tetraptera respectively. Aframomium meleghueta had high value of iron and zinc at 85 mg/100g and 97 mg/100g respectively and also high presence of alkaloids, glycosides, saponins and tannis. High values of saponins and triterpenoids were observed in Zingiber officinale and Ocimum gratissimum respectively. This study showed that spices have greater use in medicine and as food supplement.
{"title":"Proximate, Mineral Composition and Phytochemical Screening of Some Selected Spices of Ibadan Metropolis, Oyo State, Southwest, Nigeria","authors":"A. Adebola, Davies Caleb Adeosun, Abiona Dupe Lydia","doi":"10.17265/1934-7375/2017.04.003","DOIUrl":"https://doi.org/10.17265/1934-7375/2017.04.003","url":null,"abstract":"Spices which are widely used in Southwest Nigeria have aroma, enhance taste of food and possess medicinal values. Proximate, mineral composition and phytochemical screening of ten randomly selected spices were carried out. Recommended procedures were used for the analyses. Mineral composition was determined using flame photometer, colorimeter and (Atomic Absorption Spectrophotometer). The proximate composition showed that protein was high at 12.04% in Zingiber officinale and low at 2.1% in Xylopia aethiopica. Ocimium gratissium contained high moisture content at 82.1%, while Tetrapleura tetraptera had the least value of 3.5%. High ash content was recorded in Ocimum gratissium at 13.68% and lowest 0.98% in Allium cepa. For carbohydrate, Allium cepa had the highest value of 78.36%, while Allium setiva had the least value of 19.48%. Mineral composition showed high value of calcium 712 mg/100g, magnesium 172.2 mg/100g, potassium 868.5 mg/100g, sodium 75.85 mg/100g, and manganese 95.38 mg/100g in Allium sativa, Xylopia aethiopica, Momodara myristica, Ocimum gratissimum, Tetrapleura tetraptera respectively. Aframomium meleghueta had high value of iron and zinc at 85 mg/100g and 97 mg/100g respectively and also high presence of alkaloids, glycosides, saponins and tannis. High values of saponins and triterpenoids were observed in Zingiber officinale and Ocimum gratissimum respectively. This study showed that spices have greater use in medicine and as food supplement.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42971125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-28DOI: 10.17265/1934-7375/2017.04.005
E. A. Tumasyan
A great amount of results obtained from the experiments carried out by a number of scientists and by us especially have been subjected to modeling which enabled to implement analysis according to the method of dialectics “cause↔consequence”. A variety of numerous factors (chemical, physical, etc.) that engender the same biological process have been characterized by a single vector-energy (E) which along with the time (T) parameter defines the dose: D (dose) = E (energy) × T (time). Dose (D) as a cause and biological process as a consequence revealed a number of interrelated regularities such as discontinuity, continuity, homogeneity, heterogeneity, relativity, successiveness, abruptness, spontaneity and correlation between biological processes. Thus, the life cycle in vivo was based on these regularities. Besides, these regularities are necessary and sufficient to prove biologically the bioprocess realized by the mechanism of “quantum theory”.
{"title":"Biological Proof of the Mechanism of “Quantum Theory” of Biological Processes in Vivo","authors":"E. A. Tumasyan","doi":"10.17265/1934-7375/2017.04.005","DOIUrl":"https://doi.org/10.17265/1934-7375/2017.04.005","url":null,"abstract":"A great amount of results obtained from the experiments carried out by a number of scientists and by us especially have been subjected to modeling which enabled to implement analysis according to the method of dialectics “cause↔consequence”. A variety of numerous factors (chemical, physical, etc.) that engender the same biological process have been characterized by a single vector-energy (E) which along with the time (T) parameter defines the dose: D (dose) = E (energy) × T (time). Dose (D) as a cause and biological process as a consequence revealed a number of interrelated regularities such as discontinuity, continuity, homogeneity, heterogeneity, relativity, successiveness, abruptness, spontaneity and correlation between biological processes. Thus, the life cycle in vivo was based on these regularities. Besides, these regularities are necessary and sufficient to prove biologically the bioprocess realized by the mechanism of “quantum theory”.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46162248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-28DOI: 10.17265/1934-7375/2017.04.001
S. Yamane, Yuuki Hiyoshi, Shinnosuke Tanaka, Shun Ikenomoto, T. Numata, K. Takakura, T. Haraguchi, M. Palafox, M. Hara, M. Sugiyama, T. Akitsu
The authors have designed and synthesized new chiral salen-type metal (M = Fe, Co, Ni, Cu, Zn) complexes (1-5) for new conceptual dyes (co-sensitizer or colorful multi-dyes) of DSSCs (dye-sensitized solar cells). The authors measured substituent effects on their absorption spectra and redox properties, and compared them with TD-DFT (time-dependent density functional theory) calculations. Electron withdrawing groups resulted in red-shift of ultraviolet-visible (UV-Vis) spectra. For the first time, the authors also proposed and confirmed the importance of substituent effects on their electric transition dipole moments, calculated by TD-DFT for designing dyes. Chemisorption for TiO2 of the complex by carboxyl groups was confirmed by XPS measurement. In view of electronic properties, all compounds have the possibility to be dyes of DSSCs.
{"title":"Substituent Effect of Chiraldiphenyl Salen Metal (M = Fe(II), Co(II), Ni(II), Cu(II), Zn(II)) Complexes for New Conceptual DSSC Dyes","authors":"S. Yamane, Yuuki Hiyoshi, Shinnosuke Tanaka, Shun Ikenomoto, T. Numata, K. Takakura, T. Haraguchi, M. Palafox, M. Hara, M. Sugiyama, T. Akitsu","doi":"10.17265/1934-7375/2017.04.001","DOIUrl":"https://doi.org/10.17265/1934-7375/2017.04.001","url":null,"abstract":"The authors have designed and synthesized new chiral salen-type metal (M = Fe, Co, Ni, Cu, Zn) complexes (1-5) for new conceptual dyes (co-sensitizer or colorful multi-dyes) of DSSCs (dye-sensitized solar cells). The authors measured substituent effects on their absorption spectra and redox properties, and compared them with TD-DFT (time-dependent density functional theory) calculations. Electron withdrawing groups resulted in red-shift of ultraviolet-visible (UV-Vis) spectra. For the first time, the authors also proposed and confirmed the importance of substituent effects on their electric transition dipole moments, calculated by TD-DFT for designing dyes. Chemisorption for TiO2 of the complex by carboxyl groups was confirmed by XPS measurement. In view of electronic properties, all compounds have the possibility to be dyes of DSSCs.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48855481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-28DOI: 10.17265/1934-7375/2017.03.007
C. Ioannis
The authors have investigated the pH and ionic strength response of self-assembled layers formed by adsorption of amphiphilic weak polyelectrolytes. Using the SFA (Surface Forces Apparatus) the authors measured force-distance profiles of poly (isoprene)-poly (acrylic acid) block copolymers adsorbed on mica. Also by Atomic Force Microscopy the authors captured single polyelectrolyte molecule adsorbed on a surface. The effect of salt concentration (Cs) and pH upon the height of the brush layers was explored mainly by measuring the forces between two adsorbed polyelectrolyte brushes. At pH = 4 our results are in good agreement with the scaling prediction 1/3 0 s L C . Changing the pH from 4 to 10 causes a remarkable swelling of the polymer layer, but only a weak dependence on salt concentration was detected at the higher pH. This can be attributed to the degree of dissociation, which depends on the local pH value. At low pH the polyelectrolyte chains have a low charge density, while on increasing the pH the degree of dissociation rises, and the increased charge density is followed by swelling of the adsorbed layer. The local concentration of ions in the brush is now greater than that of pH = 4 and approximately equivalent to 0.3 M. So the swelling is only weakly dependent on salt concentration in the range 0.01-1.0 M. The results demonstrate the tunable nature of such self-assembled polyelectrolyte brushes whose height and range of interactions, can be systematically controlled by adjusting the pH and ionic strength of the medium.
{"title":"Tunable Self-assembled Weak Polyelectrolyte Brushes","authors":"C. Ioannis","doi":"10.17265/1934-7375/2017.03.007","DOIUrl":"https://doi.org/10.17265/1934-7375/2017.03.007","url":null,"abstract":"The authors have investigated the pH and ionic strength response of self-assembled layers formed by adsorption of amphiphilic weak polyelectrolytes. Using the SFA (Surface Forces Apparatus) the authors measured force-distance profiles of poly (isoprene)-poly (acrylic acid) block copolymers adsorbed on mica. Also by Atomic Force Microscopy the authors captured single polyelectrolyte molecule adsorbed on a surface. The effect of salt concentration (Cs) and pH upon the height of the brush layers was explored mainly by measuring the forces between two adsorbed polyelectrolyte brushes. At pH = 4 our results are in good agreement with the scaling prediction 1/3 0 s L C . Changing the pH from 4 to 10 causes a remarkable swelling of the polymer layer, but only a weak dependence on salt concentration was detected at the higher pH. This can be attributed to the degree of dissociation, which depends on the local pH value. At low pH the polyelectrolyte chains have a low charge density, while on increasing the pH the degree of dissociation rises, and the increased charge density is followed by swelling of the adsorbed layer. The local concentration of ions in the brush is now greater than that of pH = 4 and approximately equivalent to 0.3 M. So the swelling is only weakly dependent on salt concentration in the range 0.01-1.0 M. The results demonstrate the tunable nature of such self-assembled polyelectrolyte brushes whose height and range of interactions, can be systematically controlled by adjusting the pH and ionic strength of the medium.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49370986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-28DOI: 10.17265/1934-7375/2017.03.003
Mouhib Mohammed, Chentouf Mouad, G. Amina, R. Vlaev
Around the world, radioactive sources have been widely used for decades to benefit humankind; industry food; health, etc. However, the malicious use of radiological sources poses a significant threat globally. As Irradiation facility for research the goal of this paper is to show a case study of application of nuclear security and nuclear security culture code of contact in irradiation facility using cobalt 60. And it will show the necessary work done to achieve the goal of protection of radioactive material and continue working in safe conditions. This objective could not be achieved without the collaboration of all department involved in security and nuclear safety. In this work we applied the nuclear security and nuclear security culture procedures in order to define the type of system used to achieve the global objective in accordance with Global Threat Reduction Program to reduce the threat of a RDD (Radiological Dispersion Device) in collaboration with The United States Department of Energy’s NNSA (National Nuclear Security Administration). The objective of this paper is to share a local experience in upgrading security with return of experience in practice and very good collaboration with general direction of national security and all departments involved in security and nuclear safety.
{"title":"Enhancing Nuclear Security System of Irradiation Facility SIBO INRA/Tangier Morocco","authors":"Mouhib Mohammed, Chentouf Mouad, G. Amina, R. Vlaev","doi":"10.17265/1934-7375/2017.03.003","DOIUrl":"https://doi.org/10.17265/1934-7375/2017.03.003","url":null,"abstract":"Around the world, radioactive sources have been widely used for decades to benefit humankind; industry food; health, etc. However, the malicious use of radiological sources poses a significant threat globally. As Irradiation facility for research the goal of this paper is to show a case study of application of nuclear security and nuclear security culture code of contact in irradiation facility using cobalt 60. And it will show the necessary work done to achieve the goal of protection of radioactive material and continue working in safe conditions. This objective could not be achieved without the collaboration of all department involved in security and nuclear safety. In this work we applied the nuclear security and nuclear security culture procedures in order to define the type of system used to achieve the global objective in accordance with Global Threat Reduction Program to reduce the threat of a RDD (Radiological Dispersion Device) in collaboration with The United States Department of Energy’s NNSA (National Nuclear Security Administration). The objective of this paper is to share a local experience in upgrading security with return of experience in practice and very good collaboration with general direction of national security and all departments involved in security and nuclear safety.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43480356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-03-28DOI: 10.17265/1934-7375/2017.03.006
M. Zehringer, J. Abraham, F. Kammerer, V. Syla, M. Wagmann
A beta spectrometric method for the rapid determination of strontium-90 (Sr) in water samples was developed and tested. Sr is extracted directly from the water samples by means of a scintillator cocktail, containing the crown ether dicyclohexano-18-crown-6 as an extracting agent (STRONEX). Minimal clean-up is necessary when other beta nuclides are present, such as barium-140. These nuclides are eliminated by a barium chromate scavenge, prior to the extraction step. The method presented here allows for the investigation of at least 12 water samples a day and is therefore a suitable tool for emergency analysis.
{"title":"A Rapid Extraction Procedure for the Determination of Strontium-90 in Water Samples","authors":"M. Zehringer, J. Abraham, F. Kammerer, V. Syla, M. Wagmann","doi":"10.17265/1934-7375/2017.03.006","DOIUrl":"https://doi.org/10.17265/1934-7375/2017.03.006","url":null,"abstract":"A beta spectrometric method for the rapid determination of strontium-90 (Sr) in water samples was developed and tested. Sr is extracted directly from the water samples by means of a scintillator cocktail, containing the crown ether dicyclohexano-18-crown-6 as an extracting agent (STRONEX). Minimal clean-up is necessary when other beta nuclides are present, such as barium-140. These nuclides are eliminated by a barium chromate scavenge, prior to the extraction step. The method presented here allows for the investigation of at least 12 water samples a day and is therefore a suitable tool for emergency analysis.","PeriodicalId":67212,"journal":{"name":"化学与化工:英文版","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49016991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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