Geochemical, mineralogical, and micromorphologieal characteristics of soils and their relevant parent rocks including loess, ignimbrite, sandstone and limestone were investigated to identify the soil-parent material u...Geochemical, mineralogical, and micromorphologieal characteristics of soils and their relevant parent rocks including loess, ignimbrite, sandstone and limestone were investigated to identify the soil-parent material uniformity and the weathering degree of soils in Golestan Province, northern Iran. Highly developed Caleixerolls and moderately developed Haploxerepts were formed on loess and limestone, respectively. In contrast, the soils formed on ignimbrite and sandstone were non- developed Entisols. Illite was the dominant clay mineral found in ignimbrite and sandstone in both the A horizon and parent material. In loess derived soils however, smectite was dominant especially in the Bt horizon compared to its parent material indicating partly to its pedogenic formation. In limestone, illite and vermiculite were dominant both in the A and C horizons. Ti/Zr ratio proved that the studied soils were closely related to their underlying parent materials geochemically. Chemical index of alteration (CIA), micromorphological index of soil development (MISECA), smectite/illite+chlorite ratio and magnetic susceptibility were applied to investigate the degree of soil development. Results showed that the most and the least developed soils were those formed on loess deposits and limestone,respectively. Application of the different geochemical and pedogenetic approaches was proved to be useful in identifying the relevance of soils to their underlying parent materials and also their degree of development.展开更多
Field experiments were conducted using Ceranock bait station, "attract and kill" system to combat Mediterranean fruit fly, Ceratitis capitata, in citrus orchards of Baghdad and Wasit governorates, Iraq, during 2013-...Field experiments were conducted using Ceranock bait station, "attract and kill" system to combat Mediterranean fruit fly, Ceratitis capitata, in citrus orchards of Baghdad and Wasit governorates, Iraq, during 2013-2014 season. Control program was implemented in six citrus orchards of mixed citrus varieties: Orange, Citrus sinensis; Mandarin, C. reticulate; Lemon, C. lemon; and Bergamot, C. aurantium. Ceranock traps 240/ha were hanged in trees of two separate orchards in each location, with third orchard served as control. Delta and McPhail traps supplied with pheromone were used to monitor Medfly population density in treated and control orchards. Results indicated that Medfly activity and presence in citrus orchards started during the first week of October coincide with the beginning of fruits ripening. The result indicated that Medfly population density in Wasit orchards was more than that of Baghdad orchards. The total trapped insects after two weeks of Ceranock were 59, 94, 142 and 205, 277, 765 adults for the firsst, second and the control orchards in the two locations, respectively. The percentage of fruit injuries were increased dramatically when fruits mature and its color turn to yellowish reaching of 35%, 56%, 21% and 32% in mandarin and orange fruits in Baghdad and Wasit orchards, respectively, compared with 3%, 4%, 4% and 5% in treated orchards, respectively. Calculated percentage of fruit damage indicated that reduction in injuries were 97% in mandarin and 96% in orange at Baghdad orchards and were 95% and 96%, respectively, in Wasit orchards. The results of this study demonstrate clearly the efficacy of Ceranock bait station, "attract and kill" system as a control measure for Medfly in citrus orchards.展开更多
Let Z=( Zt)t≥0 be a Bessel process of dimension δ( δ〉0) starting at zero and let K(t) be a differentiable function on [0,∞) with K(t)〉0 (A↓t≥0). Then we establish the relationship between L^p-norm o...Let Z=( Zt)t≥0 be a Bessel process of dimension δ( δ〉0) starting at zero and let K(t) be a differentiable function on [0,∞) with K(t)〉0 (A↓t≥0). Then we establish the relationship between L^p-norm of log^1/2(1 +δJτ) and L^p-norm of sup Zt[t+k(t)]^-1/2 (0≤t≤τ) for all stopping times τ and all 0〈p〈+∞.As an interesting example, we show that ||log^1/2(1+δLm+1(τ)||p and ||supZtП[1+Lj(t]^1/2||p (0≤j≤m,j∈Z;0≤t≤τ) are equivalent with 0〈p〈+∞ for all stopping times rand all integer numbers m, where the function Lm(t) (t≥0) is inductively defined by Lm+1(t)=log[ 1 +Lm(t)] with L0(t)= 1.展开更多
Information technologies play an important role in many business areas. One of these areas is hotel information system. Many operations, such as check-in, check-out, and food and beverage, are performed owing to infor...Information technologies play an important role in many business areas. One of these areas is hotel information system. Many operations, such as check-in, check-out, and food and beverage, are performed owing to information technologies. Package programs are used for managing hotel operations. Software provides reporting, filtering, remote accessing, and cost control services which are important key parameters of decision-making processes of hotel managers. Cost control is one of the most important operations in hotel management. Cost control service of package programs assists managers in monitoring overall cost and computing each department's partial cost and serves information to the different departments of hotels using information technologies. Cost control is important in the departments which are profitable in a hotel. Food and beverage is one of these profitable departments, which is the second profitable department in hotels. It makes profit between mostly 20% and 40%. This research aims to understand effects of information technologies during decision-making processes. The sample of study is food and beverage managers in five-star hotels in Istanbul. Questionnaire was applied to 45 participants.展开更多
This paper focuses on the indicators of soil and litter health, disturbance, and landscape heterogeneity as a tool for prediction of ecosystem sustainability in the northern forests of Iran. The study area was divided...This paper focuses on the indicators of soil and litter health, disturbance, and landscape heterogeneity as a tool for prediction of ecosystem sustainability in the northern forests of Iran. The study area was divided into spatial homogenous sites using slope, aspect, and soil humidity classes. Then a range of sites along the disturbance gradient was selected for sampling. Chemical and physical indicators of soil and litter health were measured at random points within these sites. Structural equation modeling(SEM) was applied to link six constructs of landscape heterogeneity, three constructs of disturbance(harvest, livestock, and human accessibility), and soil and litter health. The results showed that with decreasing accessibility, the total N and organic matter content of soil increased and effective bulk density decreased. Harvesting activities increased soil organic matter. Therefore, it is concluded that disturbances through harvesting and accessibility inversely affect the soil health. Unexpectedly, it was found that the litter total C and C:N ratio improved with an increase in the harvest and accessibility disturbances, whereas litter bulk density decreased. Investigation of tree composition revealed that in the climax communities, which are normally affected more by harvesting activities, some species like Fagus orientalis Lipsky with low decomposition rate are dominant. The research results showed that changes in disturbance intensity are reflected in litter and soil indicators, whereas the SEM indicated that landscape heterogeneity has a moderator effect on the disturbance to both litter and soil paths.展开更多
In this research, we investigated the influence of rock mass properties, blast design parameters and explosive properties on blast fragmentation. Rock mass properties were evaluated in 51 blasting blocks using enginee...In this research, we investigated the influence of rock mass properties, blast design parameters and explosive properties on blast fragmentation. Rock mass properties were evaluated in 51 blasting blocks using engineering geological mapping of 1961 meters of the scanline, experiments on intact rock samples and measuring P-wave velocity(Vp) for 1771 meters of seismic profiles. The results indicate that increasing spacing, persistence, opening, roughness, waviness of discontinuities, and Vp and uniaxial compressive strength(UCS) of intact rock as well as the increase of discontinuities angle with the bench face of blasting block will increase the size distribution of blasted rocks. In addition, evaluation of the influence of connector type, specific drilling and specific charge has shown that using the Nonel system will decrease the mean size of fragmentation. It is also demonstrated that increasing specific drilling and specific charge quantities will result in the increase of mean size of fragmentation.展开更多
After presenting the infinite operator-sum form solution to the Milburn equation dp/dt=γ(UρU^f - ρ)=γU[p, Uf], where U=e^-iH/hγ, and verifying that this equation preserves the three necessary conditions of dens...After presenting the infinite operator-sum form solution to the Milburn equation dp/dt=γ(UρU^f - ρ)=γU[p, Uf], where U=e^-iH/hγ, and verifying that this equation preserves the three necessary conditions of density operators during time evolution, we prove that the yon Neumann entropy increases with time. We also point out that if A and B both obey the Milburn equation, then theproduct AB obeys (d/dt)(AB) = γU[AB, U^f]-(1/γ)(dA/dt)(dB/dt), which violates the Milburn equation, this reflects that a pure state will evolve to a mixture in general展开更多
With the spread of English language around the world and its status as an international language, the need for more communication is felt. One pivoting aspect of this communication is the role of culture which can con...With the spread of English language around the world and its status as an international language, the need for more communication is felt. One pivoting aspect of this communication is the role of culture which can contribute to the success of communication at the global level and the co-construction of identities as individuals from different parts of the world get into interactions. Thus, the role of materials developed for learning English, especially the local ones, in the improvement of individuals' intercultural competence is significant. New course books for learning English at Iranian secondary schools entitled Prospect series have been developed recently. Thus, the purpose of the present study was to evaluate the first and the second books of this series in light of Byram's model of Intercultural Communicative Competence (1CC). Based on this model, ICC consists of three dimensions of attitude, knowledge, skills, and five saviors of knowledge, attitude, discovery, interaction, and critical thinking. To do the evaluation of the course books, the checklist developed based on these five saviors was used to evaluate the tasks for each unit of the books. The evaluation was done separately by each of the researchers in the study and inter-rater reliability showed a high level of Cronbach alpha. The findings indicated that about 90 percent of the activities of Prospect 1 and Prospect 2 lack the skills required for improving English language learners' ICC. They mostly focus on Iranian culture which might have been improved via learners' first language as well. This might imply the need for the adaptation of Prospect series activities in light of ICC so that Iranian English language learners can take advantage of their communication with the rest of the world.展开更多
Milk acts as a suitable peripheral culture for growth and propagation of different kinds of micro organisms. During the process of producing cheese, some micro organisms such as Escherichia coli, Coliform, Staphylococ...Milk acts as a suitable peripheral culture for growth and propagation of different kinds of micro organisms. During the process of producing cheese, some micro organisms such as Escherichia coli, Coliform, Staphylococcus, Mold and Yeast may cause its contamination. In respect to the fact that pitcher cheese is produced in traditional way in different regions in West Azarbayjan, the aim of this research is examining the rate of contamination of pitcher cheese in West Azarbayjan. About 42 samples of pitcher cheese were gathered under strill condition from different parts of West Azarbayjan. In order to study microbes contamination, the samples were examined by standard microbiologic ways in laboratory from the 42 samples of pitcher cheese, four samples were contaminated by Staphylococcus aureus coagulase positive, 16 samples were contaminated by E. Coli, 21 samples by Coliform, 17 samples by mold and yeast. The producing and delivering should be controlled because of the rate of contamination in pitcher cheese and this kind of cheese should be produced in half industrial way by controlling and making special facilities for pitcher cheese producers.展开更多
Drilling crews of Sinopec have encountered a series of troubles when drilling a formation called kazhdumi of Yadavaran oilfield, Iran in the last few years. The formation is buried in the depth from 3300m to 3500m, ma...Drilling crews of Sinopec have encountered a series of troubles when drilling a formation called kazhdumi of Yadavaran oilfield, Iran in the last few years. The formation is buried in the depth from 3300m to 3500m, mainly including limestone, muddy limestone and some bituminous shale. Many microfissures exist in the formation and the equivalent density of formation pore pressure ranged from 1.19g/cm3 to 1.59g/cm3. Asphalt or heavy oil kicks occurred in drilling three wells in one and a half years, which contaminated the drilling fluid and made well killing difficult due to the kicks and lost circulation in open hole. Gas and hydrogen sulfide (the concentration is up to 40000ppm) were present in the wells, and finally two wells were completely abandoned and one partially losL which frustrated the drilling engineering seriously. By analyzing the data of &e drilled wells, the paper summarized the causes of the troubles, and put forward suggestions and conclusions that can serve as reference and guideline for drilling well in &is area in the future.展开更多
A field experiment was conducted using Ceranock bait station, "attract and kill" system to combat Mediterranean fruit fly, Ceratitis capitata, in apricot orchards, Central of lraq during the 2013 field season. Contr...A field experiment was conducted using Ceranock bait station, "attract and kill" system to combat Mediterranean fruit fly, Ceratitis capitata, in apricot orchards, Central of lraq during the 2013 field season. Control program was implemented in three orchards of mixed apricot varieties. Ceranock traps were hung in each tree of two separate orchards. Delta and McPhail traps were used to monitor Medfly population density in each treated and control orchards. Results indicated that Medfly activity in apricot orchards started during the last week of April coincided with the beginning of maturity for fruits of early varieties. The total of trapped insects in monitoring traps after one week of Ceranock application were 0, 1 and 31 adults for the 1st, 2nd and the control orchards, respectively. Three weeks later and on, the number of trapped adults started to increase dramatically. At the end of apricot season and after 45 days of Ceranock trap application, the number of trapped insects in monitoring traps reached 110, 111 and 2,349 adults/week, respectively, for the 1st, 2nd and 3rd orchard. The use of Ceranock traps reduced Medfly population density by 86%-97%. The percentage of fruit injuries in early maturing varieties were 0.75%, 1% and 34% for the 1st, 2nd and control orchards, respectively. While, late varieties were 2% and 3% for 1st and 2nd orchards, and 69% for the control. The percentage of reduction in fruit damages reached to 95% and 97%, respectively in the 1st and 2nd orchard. The results of this study demonstrate clearly the efficacy of Ceranock bait station, "attract and kill" system as a control measure for Medfly in apricot orchards.展开更多
Apocalypse Now is a 1979 American epic war film set during the Vietnam War, directed and produced by Francis Ford Coppola. It was originally adapted from the novella Heart of Darkness (1902), which was written in th...Apocalypse Now is a 1979 American epic war film set during the Vietnam War, directed and produced by Francis Ford Coppola. It was originally adapted from the novella Heart of Darkness (1902), which was written in the colonial era. Apocalypse Now Redux (2001) is a refined version of the 1979 edition. In previous researches, most scholars only focused on either of the two adapted versions in terms of thematic discussion and narrative analysis, which have ignored the significance of the evolution of the film and the changing historical contexts. Accordingly, on the basis of narrative theory and cultural study, the thesis makes a narrative analysis of the evolution of Apocalypse Now Redux (2001). It indicates that through some newly-inserted narrative elements in Apocalypse Now Redux (2001), more attention is paid to minority groups, darkness in war and media quagmire, which is related to different historical and political contexts and endeavors to remind the American public of the harsh lesson of Vietnam War in the 20th century. However, efforts to restraint the war seem to be ineffective, which is fully exemplified by Iraq War in 2003展开更多
It is well-known that every member of the KdV hierarchy of equations can be obtained from the AKNS hierarchy of equations by imposing a simple reduction. The author finds that the reduction conditions of the potential...It is well-known that every member of the KdV hierarchy of equations can be obtained from the AKNS hierarchy of equations by imposing a simple reduction. The author finds that the reduction conditions of the potentials in the spectral problem can be replaced by adding additional eigenfunction equations to the spectral problem, and then shows that the restricted KdV flows, such as the Neumann system, the Gamier system and the generalized multicomponent Henon-Hieles system, are a kind of special reductions of the restricted AKNS flows.展开更多
We study a stochastic Cahn-Hilliard equation driven by a Poisson random measure with Neumann boundary conditions. The global weak solution is established for the equation. Moreover, the existence of a Lyapunov functio...We study a stochastic Cahn-Hilliard equation driven by a Poisson random measure with Neumann boundary conditions. The global weak solution is established for the equation. Moreover, the existence of a Lyapunov function for the equation and an invariant measure associated with the transition semigroup are proved.展开更多
Objective:To evaluate the efficacy of a first aid training course for a group of drivers.Methods:This study comprised 500 drivers,randomly selected from the road transport companies.They underwent a course of first ...Objective:To evaluate the efficacy of a first aid training course for a group of drivers.Methods:This study comprised 500 drivers,randomly selected from the road transport companies.They underwent a course of first aid training and the results were evaluated at 0-3 and 4-6 months after training.Results:Both quantitative and qualitative improvements were observed in the drivers' efficacy in giving first aid.Also the rate of correct interventions was higher at 4-6 months than at 0-3 months.The exception was airway management which was not favorably improved after training.Conclusion:The first aid training course for drivers is beneficial and helpful for prehospital care system in road traffic accidents.展开更多
Four-nation meetings advance the peace process in Afghanistan A meeting involving representatives from Afghanistan,Pakistan,China and the United States held on January 11 in Islamabad,Pakistan,established the Quadrila...Four-nation meetings advance the peace process in Afghanistan A meeting involving representatives from Afghanistan,Pakistan,China and the United States held on January 11 in Islamabad,Pakistan,established the Quadrilateral Coordination Group(QCG)to further the peace process in Afghanistan.展开更多
Purpose: Road traffic accidents are one of main problems in Iran. Multiple factors cause traffic accidents and the most important one is sleepiness. This factor, however, is given less attention in our country. Road ...Purpose: Road traffic accidents are one of main problems in Iran. Multiple factors cause traffic accidents and the most important one is sleepiness. This factor, however, is given less attention in our country. Road traffic accidents relevant to sleepiness are studied. Methods: In this cross-sectional study, all road traffic accidents relevant to sleepiness, which were re- ported by police, were studied in Tehran province in 2009. Results: The risk of road traffic accidents due to sleepiness was increased by more than sevenfold (odds ratio = 7.33) in low alertness hours (0:00-6:00) compared to other time of day. The risk of road traffic accidents due to sleepiness was decreased by 0.15-fold (odds ratio - 0.15) in hours with maximum of alertness (18:00-22:00) of circadian rhythm compared to other time of day. Conclusion: The occurrence of road traffic accidents due to sleepiness has significant statistical relations with driving during lowest point of alertness of circadian rhythm.展开更多
基金Gorgan University of Agricultural Sciences and Natural Resources for the support of this study
文摘Geochemical, mineralogical, and micromorphologieal characteristics of soils and their relevant parent rocks including loess, ignimbrite, sandstone and limestone were investigated to identify the soil-parent material uniformity and the weathering degree of soils in Golestan Province, northern Iran. Highly developed Caleixerolls and moderately developed Haploxerepts were formed on loess and limestone, respectively. In contrast, the soils formed on ignimbrite and sandstone were non- developed Entisols. Illite was the dominant clay mineral found in ignimbrite and sandstone in both the A horizon and parent material. In loess derived soils however, smectite was dominant especially in the Bt horizon compared to its parent material indicating partly to its pedogenic formation. In limestone, illite and vermiculite were dominant both in the A and C horizons. Ti/Zr ratio proved that the studied soils were closely related to their underlying parent materials geochemically. Chemical index of alteration (CIA), micromorphological index of soil development (MISECA), smectite/illite+chlorite ratio and magnetic susceptibility were applied to investigate the degree of soil development. Results showed that the most and the least developed soils were those formed on loess deposits and limestone,respectively. Application of the different geochemical and pedogenetic approaches was proved to be useful in identifying the relevance of soils to their underlying parent materials and also their degree of development.
文摘Field experiments were conducted using Ceranock bait station, "attract and kill" system to combat Mediterranean fruit fly, Ceratitis capitata, in citrus orchards of Baghdad and Wasit governorates, Iraq, during 2013-2014 season. Control program was implemented in six citrus orchards of mixed citrus varieties: Orange, Citrus sinensis; Mandarin, C. reticulate; Lemon, C. lemon; and Bergamot, C. aurantium. Ceranock traps 240/ha were hanged in trees of two separate orchards in each location, with third orchard served as control. Delta and McPhail traps supplied with pheromone were used to monitor Medfly population density in treated and control orchards. Results indicated that Medfly activity and presence in citrus orchards started during the first week of October coincide with the beginning of fruits ripening. The result indicated that Medfly population density in Wasit orchards was more than that of Baghdad orchards. The total trapped insects after two weeks of Ceranock were 59, 94, 142 and 205, 277, 765 adults for the firsst, second and the control orchards in the two locations, respectively. The percentage of fruit injuries were increased dramatically when fruits mature and its color turn to yellowish reaching of 35%, 56%, 21% and 32% in mandarin and orange fruits in Baghdad and Wasit orchards, respectively, compared with 3%, 4%, 4% and 5% in treated orchards, respectively. Calculated percentage of fruit damage indicated that reduction in injuries were 97% in mandarin and 96% in orange at Baghdad orchards and were 95% and 96%, respectively, in Wasit orchards. The results of this study demonstrate clearly the efficacy of Ceranock bait station, "attract and kill" system as a control measure for Medfly in citrus orchards.
基金Project supported by the National Natural Science Foundation of China (No. 10571025) and the Key Project of Chinese Ministry of Education (No. 106076)
文摘Let Z=( Zt)t≥0 be a Bessel process of dimension δ( δ〉0) starting at zero and let K(t) be a differentiable function on [0,∞) with K(t)〉0 (A↓t≥0). Then we establish the relationship between L^p-norm of log^1/2(1 +δJτ) and L^p-norm of sup Zt[t+k(t)]^-1/2 (0≤t≤τ) for all stopping times τ and all 0〈p〈+∞.As an interesting example, we show that ||log^1/2(1+δLm+1(τ)||p and ||supZtП[1+Lj(t]^1/2||p (0≤j≤m,j∈Z;0≤t≤τ) are equivalent with 0〈p〈+∞ for all stopping times rand all integer numbers m, where the function Lm(t) (t≥0) is inductively defined by Lm+1(t)=log[ 1 +Lm(t)] with L0(t)= 1.
文摘Information technologies play an important role in many business areas. One of these areas is hotel information system. Many operations, such as check-in, check-out, and food and beverage, are performed owing to information technologies. Package programs are used for managing hotel operations. Software provides reporting, filtering, remote accessing, and cost control services which are important key parameters of decision-making processes of hotel managers. Cost control is one of the most important operations in hotel management. Cost control service of package programs assists managers in monitoring overall cost and computing each department's partial cost and serves information to the different departments of hotels using information technologies. Cost control is important in the departments which are profitable in a hotel. Food and beverage is one of these profitable departments, which is the second profitable department in hotels. It makes profit between mostly 20% and 40%. This research aims to understand effects of information technologies during decision-making processes. The sample of study is food and beverage managers in five-star hotels in Istanbul. Questionnaire was applied to 45 participants.
文摘This paper focuses on the indicators of soil and litter health, disturbance, and landscape heterogeneity as a tool for prediction of ecosystem sustainability in the northern forests of Iran. The study area was divided into spatial homogenous sites using slope, aspect, and soil humidity classes. Then a range of sites along the disturbance gradient was selected for sampling. Chemical and physical indicators of soil and litter health were measured at random points within these sites. Structural equation modeling(SEM) was applied to link six constructs of landscape heterogeneity, three constructs of disturbance(harvest, livestock, and human accessibility), and soil and litter health. The results showed that with decreasing accessibility, the total N and organic matter content of soil increased and effective bulk density decreased. Harvesting activities increased soil organic matter. Therefore, it is concluded that disturbances through harvesting and accessibility inversely affect the soil health. Unexpectedly, it was found that the litter total C and C:N ratio improved with an increase in the harvest and accessibility disturbances, whereas litter bulk density decreased. Investigation of tree composition revealed that in the climax communities, which are normally affected more by harvesting activities, some species like Fagus orientalis Lipsky with low decomposition rate are dominant. The research results showed that changes in disturbance intensity are reflected in litter and soil indicators, whereas the SEM indicated that landscape heterogeneity has a moderator effect on the disturbance to both litter and soil paths.
文摘In this research, we investigated the influence of rock mass properties, blast design parameters and explosive properties on blast fragmentation. Rock mass properties were evaluated in 51 blasting blocks using engineering geological mapping of 1961 meters of the scanline, experiments on intact rock samples and measuring P-wave velocity(Vp) for 1771 meters of seismic profiles. The results indicate that increasing spacing, persistence, opening, roughness, waviness of discontinuities, and Vp and uniaxial compressive strength(UCS) of intact rock as well as the increase of discontinuities angle with the bench face of blasting block will increase the size distribution of blasted rocks. In addition, evaluation of the influence of connector type, specific drilling and specific charge has shown that using the Nonel system will decrease the mean size of fragmentation. It is also demonstrated that increasing specific drilling and specific charge quantities will result in the increase of mean size of fragmentation.
文摘After presenting the infinite operator-sum form solution to the Milburn equation dp/dt=γ(UρU^f - ρ)=γU[p, Uf], where U=e^-iH/hγ, and verifying that this equation preserves the three necessary conditions of density operators during time evolution, we prove that the yon Neumann entropy increases with time. We also point out that if A and B both obey the Milburn equation, then theproduct AB obeys (d/dt)(AB) = γU[AB, U^f]-(1/γ)(dA/dt)(dB/dt), which violates the Milburn equation, this reflects that a pure state will evolve to a mixture in general
文摘With the spread of English language around the world and its status as an international language, the need for more communication is felt. One pivoting aspect of this communication is the role of culture which can contribute to the success of communication at the global level and the co-construction of identities as individuals from different parts of the world get into interactions. Thus, the role of materials developed for learning English, especially the local ones, in the improvement of individuals' intercultural competence is significant. New course books for learning English at Iranian secondary schools entitled Prospect series have been developed recently. Thus, the purpose of the present study was to evaluate the first and the second books of this series in light of Byram's model of Intercultural Communicative Competence (1CC). Based on this model, ICC consists of three dimensions of attitude, knowledge, skills, and five saviors of knowledge, attitude, discovery, interaction, and critical thinking. To do the evaluation of the course books, the checklist developed based on these five saviors was used to evaluate the tasks for each unit of the books. The evaluation was done separately by each of the researchers in the study and inter-rater reliability showed a high level of Cronbach alpha. The findings indicated that about 90 percent of the activities of Prospect 1 and Prospect 2 lack the skills required for improving English language learners' ICC. They mostly focus on Iranian culture which might have been improved via learners' first language as well. This might imply the need for the adaptation of Prospect series activities in light of ICC so that Iranian English language learners can take advantage of their communication with the rest of the world.
文摘Milk acts as a suitable peripheral culture for growth and propagation of different kinds of micro organisms. During the process of producing cheese, some micro organisms such as Escherichia coli, Coliform, Staphylococcus, Mold and Yeast may cause its contamination. In respect to the fact that pitcher cheese is produced in traditional way in different regions in West Azarbayjan, the aim of this research is examining the rate of contamination of pitcher cheese in West Azarbayjan. About 42 samples of pitcher cheese were gathered under strill condition from different parts of West Azarbayjan. In order to study microbes contamination, the samples were examined by standard microbiologic ways in laboratory from the 42 samples of pitcher cheese, four samples were contaminated by Staphylococcus aureus coagulase positive, 16 samples were contaminated by E. Coli, 21 samples by Coliform, 17 samples by mold and yeast. The producing and delivering should be controlled because of the rate of contamination in pitcher cheese and this kind of cheese should be produced in half industrial way by controlling and making special facilities for pitcher cheese producers.
文摘Drilling crews of Sinopec have encountered a series of troubles when drilling a formation called kazhdumi of Yadavaran oilfield, Iran in the last few years. The formation is buried in the depth from 3300m to 3500m, mainly including limestone, muddy limestone and some bituminous shale. Many microfissures exist in the formation and the equivalent density of formation pore pressure ranged from 1.19g/cm3 to 1.59g/cm3. Asphalt or heavy oil kicks occurred in drilling three wells in one and a half years, which contaminated the drilling fluid and made well killing difficult due to the kicks and lost circulation in open hole. Gas and hydrogen sulfide (the concentration is up to 40000ppm) were present in the wells, and finally two wells were completely abandoned and one partially losL which frustrated the drilling engineering seriously. By analyzing the data of &e drilled wells, the paper summarized the causes of the troubles, and put forward suggestions and conclusions that can serve as reference and guideline for drilling well in &is area in the future.
文摘A field experiment was conducted using Ceranock bait station, "attract and kill" system to combat Mediterranean fruit fly, Ceratitis capitata, in apricot orchards, Central of lraq during the 2013 field season. Control program was implemented in three orchards of mixed apricot varieties. Ceranock traps were hung in each tree of two separate orchards. Delta and McPhail traps were used to monitor Medfly population density in each treated and control orchards. Results indicated that Medfly activity in apricot orchards started during the last week of April coincided with the beginning of maturity for fruits of early varieties. The total of trapped insects in monitoring traps after one week of Ceranock application were 0, 1 and 31 adults for the 1st, 2nd and the control orchards, respectively. Three weeks later and on, the number of trapped adults started to increase dramatically. At the end of apricot season and after 45 days of Ceranock trap application, the number of trapped insects in monitoring traps reached 110, 111 and 2,349 adults/week, respectively, for the 1st, 2nd and 3rd orchard. The use of Ceranock traps reduced Medfly population density by 86%-97%. The percentage of fruit injuries in early maturing varieties were 0.75%, 1% and 34% for the 1st, 2nd and control orchards, respectively. While, late varieties were 2% and 3% for 1st and 2nd orchards, and 69% for the control. The percentage of reduction in fruit damages reached to 95% and 97%, respectively in the 1st and 2nd orchard. The results of this study demonstrate clearly the efficacy of Ceranock bait station, "attract and kill" system as a control measure for Medfly in apricot orchards.
文摘Apocalypse Now is a 1979 American epic war film set during the Vietnam War, directed and produced by Francis Ford Coppola. It was originally adapted from the novella Heart of Darkness (1902), which was written in the colonial era. Apocalypse Now Redux (2001) is a refined version of the 1979 edition. In previous researches, most scholars only focused on either of the two adapted versions in terms of thematic discussion and narrative analysis, which have ignored the significance of the evolution of the film and the changing historical contexts. Accordingly, on the basis of narrative theory and cultural study, the thesis makes a narrative analysis of the evolution of Apocalypse Now Redux (2001). It indicates that through some newly-inserted narrative elements in Apocalypse Now Redux (2001), more attention is paid to minority groups, darkness in war and media quagmire, which is related to different historical and political contexts and endeavors to remind the American public of the harsh lesson of Vietnam War in the 20th century. However, efforts to restraint the war seem to be ineffective, which is fully exemplified by Iraq War in 2003
基金Project supported by the National Natural Science Foundation of China (No.10871165)
文摘It is well-known that every member of the KdV hierarchy of equations can be obtained from the AKNS hierarchy of equations by imposing a simple reduction. The author finds that the reduction conditions of the potentials in the spectral problem can be replaced by adding additional eigenfunction equations to the spectral problem, and then shows that the restricted KdV flows, such as the Neumann system, the Gamier system and the generalized multicomponent Henon-Hieles system, are a kind of special reductions of the restricted AKNS flows.
基金supported by National Natural Science Foundation of China(Grant Nos.11101222,11101223 and 11271203)the China Scholarship Council(CSC)(Grant No.201208120071)
文摘We study a stochastic Cahn-Hilliard equation driven by a Poisson random measure with Neumann boundary conditions. The global weak solution is established for the equation. Moreover, the existence of a Lyapunov function for the equation and an invariant measure associated with the transition semigroup are proved.
文摘Objective:To evaluate the efficacy of a first aid training course for a group of drivers.Methods:This study comprised 500 drivers,randomly selected from the road transport companies.They underwent a course of first aid training and the results were evaluated at 0-3 and 4-6 months after training.Results:Both quantitative and qualitative improvements were observed in the drivers' efficacy in giving first aid.Also the rate of correct interventions was higher at 4-6 months than at 0-3 months.The exception was airway management which was not favorably improved after training.Conclusion:The first aid training course for drivers is beneficial and helpful for prehospital care system in road traffic accidents.
文摘Four-nation meetings advance the peace process in Afghanistan A meeting involving representatives from Afghanistan,Pakistan,China and the United States held on January 11 in Islamabad,Pakistan,established the Quadrilateral Coordination Group(QCG)to further the peace process in Afghanistan.
文摘Purpose: Road traffic accidents are one of main problems in Iran. Multiple factors cause traffic accidents and the most important one is sleepiness. This factor, however, is given less attention in our country. Road traffic accidents relevant to sleepiness are studied. Methods: In this cross-sectional study, all road traffic accidents relevant to sleepiness, which were re- ported by police, were studied in Tehran province in 2009. Results: The risk of road traffic accidents due to sleepiness was increased by more than sevenfold (odds ratio = 7.33) in low alertness hours (0:00-6:00) compared to other time of day. The risk of road traffic accidents due to sleepiness was decreased by 0.15-fold (odds ratio - 0.15) in hours with maximum of alertness (18:00-22:00) of circadian rhythm compared to other time of day. Conclusion: The occurrence of road traffic accidents due to sleepiness has significant statistical relations with driving during lowest point of alertness of circadian rhythm.