The area of the present investigation’s expanse constitutes the southernmost extent of the southeast Kumaun Himalaya and western Nepal Himalaya.Multidisciplinary approaches have been employed to understand the landfo...The area of the present investigation’s expanse constitutes the southernmost extent of the southeast Kumaun Himalaya and western Nepal Himalaya.Multidisciplinary approaches have been employed to understand the landforms associated with tectonic deformation,through detailed field investigation supplemented by the geodetic,chronological,and morphometric database.The morphogenic expressions of the Main Boundary Thrust(MBT)are reflected in the form of~25 km long E-W trending north dipping fault scarp.The deformation along the strike length of the Himalayan Frontal Thrust(HFT)is noticed in the form of uplifted and incised fill terraces,and strath terraces.The deformation within the fluvial sequences in the study area can be visualized in the form of sheared boulders and pebbles,tilted and faulted terrace deposits.Furthermore,the chronological data of fluvial landforms in the study area suggests two major phases of tectonic deformations that have occurred around 58.7±10.8 ka and 3.88±0.4 ka.The chronology of late-Quaternary landforms advocates that the initial stage of aggradations in the Himalayan foothills commenced around 75.1±0.58 ka.The aggradational landforms resulted from the diverse depositional regime as evident from the nature of the sediment sequences from clasts dominated to thick mud sequences.The rate of deformation in the southeastern Kumaun and western Nepal Himalaya is±7 mm/yr,as per the data obtained from the Persistent Scatterer Interferometric Synthetic Aperture Radar(PSInSAR).The landform deformation pattern,phase of incision and aggradation,frequent occurrence of landslides,and recent past earthquake activity within the wide zone of the HFT,the MBT,and Ramgarh Thrust suggests that the southernmost front of the Kumaun Himalaya is active and has potential for future geohazard.The foothill zone of Himalayan towns are actively growing in terms of population and infrastructural development.Therefore,such intradisciplinary studies for tectonically active regions are needed for future infrastructural development.展开更多
Hydrates always are considered as a threat to petroleum industry due to the operational problems it can cause.These problems could result in reducing production performance or even production stoppage for a long time....Hydrates always are considered as a threat to petroleum industry due to the operational problems it can cause.These problems could result in reducing production performance or even production stoppage for a long time.In this paper, we were intended to develop a LSSVM algorithm for prognosticating hydrate formation temperature(HFT) in a wide range of natural gas mixtures. A total number of 279 experimental data points were extracted from open literature to develop the LSSVM. The input parameters were chosen based on the hydrate structure that each gas species form. The modeling resulted in a robust algorithm with the squared correlation coefficients(R^2) of 0.9918. Aside from the excellent statistical parameters of the model, comparing proposed LSSVM with some of conventional correlations showed its supremacy, particularly in the case of sour gases with high H_2S concentrations, where the model surpasses all correlations and existing thermodynamic models. For detection of the probable doubtful experimental data, and applicability of the model, the Leverage statistical approach was performed on the data sets. This algorithm showed that the proposed LSSVM model is statistically valid for HFT prediction and almost all the data points are in the applicability domain of the model.展开更多
High-frequency trading(HFT)practices in the global financial markets involve the use of information and communication technologies(ICT),especially the capabilities of high-speed networks,rapid computation,and algorith...High-frequency trading(HFT)practices in the global financial markets involve the use of information and communication technologies(ICT),especially the capabilities of high-speed networks,rapid computation,and algorithmic detection of changing information and prices that create opportunities for computers to effect low-latency trades that can be accomplished in milliseconds.HFT practices exist because a variety of new technologies have made them possible,and because financial market infrastructure capabilities have also been changing so rapidly.The U.S.markets,such as the National Association for Securities Dealers Automated Quote(NASDAQ)market and the New York Stock Exchange(NYSE),have maintained relevance and centrality in financial intermediation in financial markets settings that have changed so much in the past 20 years that they are hardly recognizable.In this article,we explore the technological,institutional and market developments in leading financial markets around the world that have embraced HFT trading.From these examples,we will distill a number of common characteristics that seem to be in operation,and then assess the extent to which HFT practices have begun to be observed in Asian regional financial markets,and what will be their likely impacts.We also discuss a number of theoretical and empirical research directions of interest.展开更多
HIPS （High Integrity Protection System） is a really important system to protect the fractionation column from overpressure and to protect any atmospheric pollution from flare stack, scrubber and VCU （vapor combusti...HIPS （High Integrity Protection System） is a really important system to protect the fractionation column from overpressure and to protect any atmospheric pollution from flare stack, scrubber and VCU （vapor combustion unit）, etc. KOSHA （Korea Occupational Safety ＆ Health Agency） made criteria about HIPS inspection in 2007 to enforce HIPS inspection. HIPS is the first system which KOSHA and KGS （Korea Gas Safety Corp.） officially required to attach SIL verification report in the Process Safety Report. KOSHA and KGS uniformly require SIL3 for HIPS and require to configure the safety instrumented function to meet SIL3 requirement. The flare system with SIL3 application should have the interlocks to shut off the heat source in case of high pressure from tower, the cooling system failure and the power failure. KOSHA and KGS admit that the flare load is 0 where SIL 3 is applied to the flare system. So it is beneficial to plant because the equipment investment cost can be saved if SIL3 is applied to the flare system. By this reason, so many plants in Korea applied SIL3 to the flare system, scrubber system and VCU, etc. For SIL3 application, the redundant shutdown valve with PST （partial stroke test） should be installed with 1 out of 2 voting and the positioner for PST function should have HART communication function. There were problems caused by HART communication devices, so the system design should be cautiously done considering the operation availability and safety at the same time.展开更多
Aim of the study. -To evaluate mefloquine versus halofantrine in children suffering from acute uncomplicated falciparum malaria. Material and methods. -Prospective non randomized study in hospitalized children during ...Aim of the study. -To evaluate mefloquine versus halofantrine in children suffering from acute uncomplicated falciparum malaria. Material and methods. -Prospective non randomized study in hospitalized children during one year. Acute falcipamm malaria was defined by fever and a positive thin and/or thick smear. Malaria was presumed to have been contracted in Comoros archipelago and/or Madagascar 6 months previously. Patients were excluded, when quinine had to be used, according to World Health Organization’s severity criteria. Results. -Forty-nine children were included: 29 were treated with halofantrine and 20 with mefioquine. Patients features in the two groups of treatment were identical, with exception for the mean time between first clinical signs and diagnosis (shorter in mefloquine group). Fever’s and hospitalization’s durations under treatment were similar. An increase in QTc interval was frequently observed in patients treated with halofantrine (56 versus 0%), although patients with mefloquine experienced vomiting (45 versus 0%). Relapses seemed to bemore frequent with halofantrine (14 versus 0%). Discussion. -Halofantrine and mefloquine are efficient for falciparum malaria treatment in our pediatric series, despite a high rate of adverse events. Mefloquine’s tolerance may probably be improved with changes in regimen and dose. Relapses are more frequent with a single first treatment of halofantrine, than with mefloquine. Unfortunately, features of a second halofantrine treatment are not defined.展开更多
基金Council of Scientific and Innovative Research for providing fellowship (file number- 09/0420(15968)/2022-EMRI)
文摘The area of the present investigation’s expanse constitutes the southernmost extent of the southeast Kumaun Himalaya and western Nepal Himalaya.Multidisciplinary approaches have been employed to understand the landforms associated with tectonic deformation,through detailed field investigation supplemented by the geodetic,chronological,and morphometric database.The morphogenic expressions of the Main Boundary Thrust(MBT)are reflected in the form of~25 km long E-W trending north dipping fault scarp.The deformation along the strike length of the Himalayan Frontal Thrust(HFT)is noticed in the form of uplifted and incised fill terraces,and strath terraces.The deformation within the fluvial sequences in the study area can be visualized in the form of sheared boulders and pebbles,tilted and faulted terrace deposits.Furthermore,the chronological data of fluvial landforms in the study area suggests two major phases of tectonic deformations that have occurred around 58.7±10.8 ka and 3.88±0.4 ka.The chronology of late-Quaternary landforms advocates that the initial stage of aggradations in the Himalayan foothills commenced around 75.1±0.58 ka.The aggradational landforms resulted from the diverse depositional regime as evident from the nature of the sediment sequences from clasts dominated to thick mud sequences.The rate of deformation in the southeastern Kumaun and western Nepal Himalaya is±7 mm/yr,as per the data obtained from the Persistent Scatterer Interferometric Synthetic Aperture Radar(PSInSAR).The landform deformation pattern,phase of incision and aggradation,frequent occurrence of landslides,and recent past earthquake activity within the wide zone of the HFT,the MBT,and Ramgarh Thrust suggests that the southernmost front of the Kumaun Himalaya is active and has potential for future geohazard.The foothill zone of Himalayan towns are actively growing in terms of population and infrastructural development.Therefore,such intradisciplinary studies for tectonically active regions are needed for future infrastructural development.
文摘Hydrates always are considered as a threat to petroleum industry due to the operational problems it can cause.These problems could result in reducing production performance or even production stoppage for a long time.In this paper, we were intended to develop a LSSVM algorithm for prognosticating hydrate formation temperature(HFT) in a wide range of natural gas mixtures. A total number of 279 experimental data points were extracted from open literature to develop the LSSVM. The input parameters were chosen based on the hydrate structure that each gas species form. The modeling resulted in a robust algorithm with the squared correlation coefficients(R^2) of 0.9918. Aside from the excellent statistical parameters of the model, comparing proposed LSSVM with some of conventional correlations showed its supremacy, particularly in the case of sour gases with high H_2S concentrations, where the model surpasses all correlations and existing thermodynamic models. For detection of the probable doubtful experimental data, and applicability of the model, the Leverage statistical approach was performed on the data sets. This algorithm showed that the proposed LSSVM model is statistically valid for HFT prediction and almost all the data points are in the applicability domain of the model.
文摘High-frequency trading(HFT)practices in the global financial markets involve the use of information and communication technologies(ICT),especially the capabilities of high-speed networks,rapid computation,and algorithmic detection of changing information and prices that create opportunities for computers to effect low-latency trades that can be accomplished in milliseconds.HFT practices exist because a variety of new technologies have made them possible,and because financial market infrastructure capabilities have also been changing so rapidly.The U.S.markets,such as the National Association for Securities Dealers Automated Quote(NASDAQ)market and the New York Stock Exchange(NYSE),have maintained relevance and centrality in financial intermediation in financial markets settings that have changed so much in the past 20 years that they are hardly recognizable.In this article,we explore the technological,institutional and market developments in leading financial markets around the world that have embraced HFT trading.From these examples,we will distill a number of common characteristics that seem to be in operation,and then assess the extent to which HFT practices have begun to be observed in Asian regional financial markets,and what will be their likely impacts.We also discuss a number of theoretical and empirical research directions of interest.
文摘HIPS （High Integrity Protection System） is a really important system to protect the fractionation column from overpressure and to protect any atmospheric pollution from flare stack, scrubber and VCU （vapor combustion unit）, etc. KOSHA （Korea Occupational Safety ＆ Health Agency） made criteria about HIPS inspection in 2007 to enforce HIPS inspection. HIPS is the first system which KOSHA and KGS （Korea Gas Safety Corp.） officially required to attach SIL verification report in the Process Safety Report. KOSHA and KGS uniformly require SIL3 for HIPS and require to configure the safety instrumented function to meet SIL3 requirement. The flare system with SIL3 application should have the interlocks to shut off the heat source in case of high pressure from tower, the cooling system failure and the power failure. KOSHA and KGS admit that the flare load is 0 where SIL 3 is applied to the flare system. So it is beneficial to plant because the equipment investment cost can be saved if SIL3 is applied to the flare system. By this reason, so many plants in Korea applied SIL3 to the flare system, scrubber system and VCU, etc. For SIL3 application, the redundant shutdown valve with PST （partial stroke test） should be installed with 1 out of 2 voting and the positioner for PST function should have HART communication function. There were problems caused by HART communication devices, so the system design should be cautiously done considering the operation availability and safety at the same time.
文摘Aim of the study. -To evaluate mefloquine versus halofantrine in children suffering from acute uncomplicated falciparum malaria. Material and methods. -Prospective non randomized study in hospitalized children during one year. Acute falcipamm malaria was defined by fever and a positive thin and/or thick smear. Malaria was presumed to have been contracted in Comoros archipelago and/or Madagascar 6 months previously. Patients were excluded, when quinine had to be used, according to World Health Organization’s severity criteria. Results. -Forty-nine children were included: 29 were treated with halofantrine and 20 with mefioquine. Patients features in the two groups of treatment were identical, with exception for the mean time between first clinical signs and diagnosis (shorter in mefloquine group). Fever’s and hospitalization’s durations under treatment were similar. An increase in QTc interval was frequently observed in patients treated with halofantrine (56 versus 0%), although patients with mefloquine experienced vomiting (45 versus 0%). Relapses seemed to bemore frequent with halofantrine (14 versus 0%). Discussion. -Halofantrine and mefloquine are efficient for falciparum malaria treatment in our pediatric series, despite a high rate of adverse events. Mefloquine’s tolerance may probably be improved with changes in regimen and dose. Relapses are more frequent with a single first treatment of halofantrine, than with mefloquine. Unfortunately, features of a second halofantrine treatment are not defined.
