教学内容分析本课例所选故事课题为"Cats and Dogs",选自外语教学与研究出版社的《英语(新标准)》,一年级起点第八册的课后阅读Reading for Pleasure。属于课外选学内容。这是一则讲述有关"猫狗不和"的民间传说,也...教学内容分析本课例所选故事课题为"Cats and Dogs",选自外语教学与研究出版社的《英语(新标准)》,一年级起点第八册的课后阅读Reading for Pleasure。属于课外选学内容。这是一则讲述有关"猫狗不和"的民间传说,也是一个生动有趣的童话故事,其故事情节、矛盾较突出,图文并茂受到学生们的喜爱。故事运用了叙述与对话相结合的语言表达方式。教材配套了故事的音频与卡通。展开更多
The effects of 7.5％ NaCl-6％ dextran 70 in small dosage on the cardiovascular func-tion and the survival rate in hemorrhagic shock at a simnlated altitude of 4000 m were observedin dogs.The animals were bled from the...The effects of 7.5％ NaCl-6％ dextran 70 in small dosage on the cardiovascular func-tion and the survival rate in hemorrhagic shock at a simnlated altitude of 4000 m were observedin dogs.The animals were bled from the femoral artery for 8 rain to reduce the mean arterialpressure to 5.73±0.1kPa,which was maintained for an hour.Then the dogs were intravenouslyinjected with 4ml/kg 0.9％ NaCL(NS group,n=7),7.5％ NaCl(HS group,n=6)and 7.5％Naa-6％ dextran 70(HSD group,n=6)respectively.In the 2-hour-period after injection,5out of 7 dogs of NS group died but only 1 out of the 6 of both the HS and HSD groupsdied.Significant increase of mean arterial pressure,left ventricular pressure,±dp/dt max of leftventricle,cardiac output,cardiac index and cardiac minute work index was observed in both theHS and HSD groups.Improvement of the cardiovascular function was even more marked inHSD group than in HS group,thougth the difference between the 2 groups was statisticallyinsignificant.There was a tendency for the pulmonary vascular resistance to decrease in HS andHSD groups as compared with the NS group.The percentage of plasma expansion of HSDgroup was larger than that of HS group(P【0.05)and of NS group(P【0.01),but nosignificant difference existed between the HS and NS groups.It is believed that intravenous injection of hypertonic saline alone or in combination with dextran is effective for the treatment ofhemorrhagic shock at high altitude and the combination of 7.5％ NaCl and 6％ dextran 70seems even more effective.展开更多
Sixteen one-year-old dogs were used in our experiment.We rotated the maxillary secondincisors of the dogs,applying a force of 100g and a moment of 550g·mm.The duration of theexperiment varied from 72h to 8 weeks....Sixteen one-year-old dogs were used in our experiment.We rotated the maxillary secondincisors of the dogs,applying a force of 100g and a moment of 550g·mm.The duration of theexperiment varied from 72h to 8 weeks.Activation was performed once every 2 weeks and the impressions were taken in order to measure the angles of rotation.The results of our experiment showthat the rotation rate of single-rooted tooth in dogs is 3.04/week.The graph shows the form ofgradual stairs.This paper introduces a new specialized experimental apparatus for tooth rotation.The angles of rotation are measured geometrically.展开更多
OBJECTIVE To investigate a new noninvasive method for calculating left ventricular diastolic time constant(Tau) through a continuous-wave aortic regurgitation Doppler spectrum.METHODS According to ultrasound guidance,...OBJECTIVE To investigate a new noninvasive method for calculating left ventricular diastolic time constant(Tau) through a continuous-wave aortic regurgitation Doppler spectrum.METHODS According to ultrasound guidance, twenty-four animal models(beagles) of aortic regurgitation and acute ischemic left ventricular diastolic dysfunction were created. The left ventricular diastolic function was manipulated with dobutamine or esmolol and fifty-nine hemodynamic stages were achieved. Raw audio signals of the continuous-wave Doppler spectra were collected, and new aortic regurgitation Doppler spectra were built after reprocessing by a personal computer. The updating time of the spectral line was 0.3 ms. The new Doppler spectra contour line was automated using MATLAB(MATrix LABoratory, MathWorks, Natick, MA, USA), and two time intervals,(t2–t1) and(t3–t1) were measured on the ascending branch of the aortic regurgitation Doppler spectrum. Then, the two time intervals were substituted into Bai's equations, and Doppler-derived Tau(Tau-D)was resolved and compared with catheter-derived Tau(Tau-c).RESULTS There is no significant difference between Tau-D and Tau-c(45.95 ± 16.90 ms and 46.81 ± 17.31 ms, respectively;P >0.05). Correlation analysis between Tau-c and Tau-D suggested a strong positive relationship(r = 0.97, P = 0.000). A Bland-Altman plot of Tau-c and Tau-D revealed fair agreement.CONCLUSIONS This new calculation method is simple, convenient, and shows a strong positive relationship and fair agreement with the catheter method.展开更多
Most dog owners feel that their dogs are their best friends.Al-most everyone likes dogs because they try hard to please theirowners.One of my favorite stories is about a dog who wanted hisowner to please him.
I just realized that while children are dos—loyal and affectionate—teenagers are cats.It's so easy to be a dog owner. You feed it, train it, and boss it around. It puts head on your knee and gazes at you as if y...I just realized that while children are dos—loyal and affectionate—teenagers are cats.It's so easy to be a dog owner. You feed it, train it, and boss it around. It puts head on your knee and gazes at you as if you were a Rembrandt painting. It bounds indoors with enthusiasm when you call it.展开更多
Acute fulminant pancreatitis was produced in dogs by injection of autobile into the main pancreatic duct.After injection the phospholipase A_2(PLA_2)activities in serum,lung lymph and bronchoalveolar lavage fluid(BAL)...Acute fulminant pancreatitis was produced in dogs by injection of autobile into the main pancreatic duct.After injection the phospholipase A_2(PLA_2)activities in serum,lung lymph and bronchoalveolar lavage fluid(BAL)were elevated significantly,lung lymph flow and pulmonary transvascular potein clearance increased progressively,protein content and cell numbers in BAL in the experimental animals were significantly higher than those in the control animals.Furthermore the lung index,wet to dry lung weight ratio,extravascular lung water to bloodless dry lung weight ra- tio,extravascuar lung water to bloodless dry lung weight ratio increased significantly as compared to control animals.Pretreatment with PLA_2 inhibitor,chloroquine,blocked the changes mentioned above.This experiment suggests:1.PLA_2 activity in lung lymph fluid as well as in serum and BAL is elevated in acute hemorrhagic pancreatitis.2.Elevated PLA_2 activity may increase the pulmonary vascular permeability.3.PLA_2 is the major factor leading to pulmonary edema in acute hemorrhagic pancreatitis.4.Phagocytes contribute to the lung injury induced by PLA_2 to some ex- tent.展开更多
The cloud computing technology is utilized for achieving resource utilization of remotebased virtual computer to facilitate the consumers with rapid and accurate massive data services.It utilizes on-demand resource pr...The cloud computing technology is utilized for achieving resource utilization of remotebased virtual computer to facilitate the consumers with rapid and accurate massive data services.It utilizes on-demand resource provisioning,but the necessitated constraints of rapid turnaround time,minimal execution cost,high rate of resource utilization and limited makespan transforms the Load Balancing(LB)process-based Task Scheduling(TS)problem into an NP-hard optimization issue.In this paper,Hybrid Prairie Dog and Beluga Whale Optimization Algorithm(HPDBWOA)is propounded for precise mapping of tasks to virtual machines with the due objective of addressing the dynamic nature of cloud environment.This capability of HPDBWOA helps in decreasing the SLA violations and Makespan with optimal resource management.It is modelled as a scheduling strategy which utilizes the merits of PDOA and BWOA for attaining reactive decisions making with respect to the process of assigning the tasks to virtual resources by considering their priorities into account.It addresses the problem of pre-convergence with wellbalanced exploration and exploitation to attain necessitated Quality of Service(QoS)for minimizing the waiting time incurred during TS process.It further balanced exploration and exploitation rates for reducing the makespan during the task allocation with complete awareness of VM state.The results of the proposed HPDBWOA confirmed minimized energy utilization of 32.18% and reduced cost of 28.94% better than approaches used for investigation.The statistical investigation of the proposed HPDBWOA conducted using ANOVA confirmed its efficacy over the benchmarked systems in terms of throughput,system,and response time.展开更多
Experimental high-velocity missile injuries were produced on both hind legs of 15 dogs.It was found that the concentration of vasoactive intestinal peptide-like immunoreactivity(VIP-LI)significantly elevated in both p...Experimental high-velocity missile injuries were produced on both hind legs of 15 dogs.It was found that the concentration of vasoactive intestinal peptide-like immunoreactivity(VIP-LI)significantly elevated in both plasma and brain at the early stage after injuries.However,thechanges of VIP-LI concentration in the plasma and brain did not coincide with each other.The re-sults suggest that VIP-LI may participate in the post-traumatic general reaction.The significanceand machanism of the elevation of cerebral VIP-LI level after a severe non-cerebral trauma remainto be clarified.展开更多
In the present experiment,we investigate the effects of orthodontic tooth rotation onneighboring teeth and periodontal tissues.The second maxillary incisors of 16 randomly selecteddogs were subjected to rotation at a ...In the present experiment,we investigate the effects of orthodontic tooth rotation onneighboring teeth and periodontal tissues.The second maxillary incisors of 16 randomly selecteddogs were subjected to rotation at a magnitude of 100 grams and a moment of 550 g·mm in a du-ration of 3 to 56 days.Then sections were prepared for histological examination.The findings re-vealed that,due to tooth rotation,neighboring teeth were drifted and rotated(82%),and therewere disarrangement and hyalinization of the periodontal ligament(88%),remodeling of the pe-riodontium(86%)and root resorption(32%)were also observed.These results demonstratethat tooth rotation may exert marked effects on neighboring teeth and periodontal tissues,whichmay be of important clinical significance.展开更多
In this study,the changes in activity and mRNA transcript of basic fibroblast growth fac-tor(bFGF)in lung injury and the effect of prostacyclin on the treatment of lung injury wereinvestigated.The result of the experi...In this study,the changes in activity and mRNA transcript of basic fibroblast growth fac-tor(bFGF)in lung injury and the effect of prostacyclin on the treatment of lung injury wereinvestigated.The result of the experiment revealed that there were not any bioactive bFGF andbFGF mRNA in the lung tissue of normal dogs.bFGF activity and bFGF mRNA were detectedonly in the injured lung tissue.Prostacyclin could slightly elevate the activity of bFGF andsignificantly elevate the level of bFGF mRNA.The findings suggest that(1)the level of bFGF in-creased after lung injury.(2)Prostacyclin could influence the expression of bFGF.(3)bFGF couldplay an important role in the repair of injury lung tissue.展开更多
A comparative study was performed of the permeability of cell membranous structures in canine stunned myocardium and that of infarct myocardium by using colloidal lanthanum nitrate as an ultrastructure probe. Stunned ...A comparative study was performed of the permeability of cell membranous structures in canine stunned myocardium and that of infarct myocardium by using colloidal lanthanum nitrate as an ultrastructure probe. Stunned myocardium was characterized by mitochondrial swelling, vacuolar formation, a few lanthanum granules deposrting inside cells and intact structure of such membranes as cell membrane, mitochondrial membrane and lysosome membrane.Infarct myocardium was characterized by a large number of lanthanum granules passing through ruptured cell membrane and depositing in the cytoplasm and mitochondria. These results suggest that membranous structure remained intact during the occurrence of stunned myocardium.展开更多
文摘教学内容分析本课例所选故事课题为"Cats and Dogs",选自外语教学与研究出版社的《英语(新标准)》,一年级起点第八册的课后阅读Reading for Pleasure。属于课外选学内容。这是一则讲述有关"猫狗不和"的民间传说,也是一个生动有趣的童话故事,其故事情节、矛盾较突出,图文并茂受到学生们的喜爱。故事运用了叙述与对话相结合的语言表达方式。教材配套了故事的音频与卡通。
文摘The effects of 7.5％ NaCl-6％ dextran 70 in small dosage on the cardiovascular func-tion and the survival rate in hemorrhagic shock at a simnlated altitude of 4000 m were observedin dogs.The animals were bled from the femoral artery for 8 rain to reduce the mean arterialpressure to 5.73±0.1kPa,which was maintained for an hour.Then the dogs were intravenouslyinjected with 4ml/kg 0.9％ NaCL(NS group,n=7),7.5％ NaCl(HS group,n=6)and 7.5％Naa-6％ dextran 70(HSD group,n=6)respectively.In the 2-hour-period after injection,5out of 7 dogs of NS group died but only 1 out of the 6 of both the HS and HSD groupsdied.Significant increase of mean arterial pressure,left ventricular pressure,±dp/dt max of leftventricle,cardiac output,cardiac index and cardiac minute work index was observed in both theHS and HSD groups.Improvement of the cardiovascular function was even more marked inHSD group than in HS group,thougth the difference between the 2 groups was statisticallyinsignificant.There was a tendency for the pulmonary vascular resistance to decrease in HS andHSD groups as compared with the NS group.The percentage of plasma expansion of HSDgroup was larger than that of HS group(P【0.05)and of NS group(P【0.01),but nosignificant difference existed between the HS and NS groups.It is believed that intravenous injection of hypertonic saline alone or in combination with dextran is effective for the treatment ofhemorrhagic shock at high altitude and the combination of 7.5％ NaCl and 6％ dextran 70seems even more effective.
文摘Sixteen one-year-old dogs were used in our experiment.We rotated the maxillary secondincisors of the dogs,applying a force of 100g and a moment of 550g·mm.The duration of theexperiment varied from 72h to 8 weeks.Activation was performed once every 2 weeks and the impressions were taken in order to measure the angles of rotation.The results of our experiment showthat the rotation rate of single-rooted tooth in dogs is 3.04/week.The graph shows the form ofgradual stairs.This paper introduces a new specialized experimental apparatus for tooth rotation.The angles of rotation are measured geometrically.
基金supported by the National Natural Science Foundation of China (No.81771833)the Beijing Natural Science Foundation (No.7172209)。
文摘OBJECTIVE To investigate a new noninvasive method for calculating left ventricular diastolic time constant(Tau) through a continuous-wave aortic regurgitation Doppler spectrum.METHODS According to ultrasound guidance, twenty-four animal models(beagles) of aortic regurgitation and acute ischemic left ventricular diastolic dysfunction were created. The left ventricular diastolic function was manipulated with dobutamine or esmolol and fifty-nine hemodynamic stages were achieved. Raw audio signals of the continuous-wave Doppler spectra were collected, and new aortic regurgitation Doppler spectra were built after reprocessing by a personal computer. The updating time of the spectral line was 0.3 ms. The new Doppler spectra contour line was automated using MATLAB(MATrix LABoratory, MathWorks, Natick, MA, USA), and two time intervals,(t2–t1) and(t3–t1) were measured on the ascending branch of the aortic regurgitation Doppler spectrum. Then, the two time intervals were substituted into Bai's equations, and Doppler-derived Tau(Tau-D)was resolved and compared with catheter-derived Tau(Tau-c).RESULTS There is no significant difference between Tau-D and Tau-c(45.95 ± 16.90 ms and 46.81 ± 17.31 ms, respectively;P >0.05). Correlation analysis between Tau-c and Tau-D suggested a strong positive relationship(r = 0.97, P = 0.000). A Bland-Altman plot of Tau-c and Tau-D revealed fair agreement.CONCLUSIONS This new calculation method is simple, convenient, and shows a strong positive relationship and fair agreement with the catheter method.
文摘Most dog owners feel that their dogs are their best friends.Al-most everyone likes dogs because they try hard to please theirowners.One of my favorite stories is about a dog who wanted hisowner to please him.
文摘I just realized that while children are dos—loyal and affectionate—teenagers are cats.It's so easy to be a dog owner. You feed it, train it, and boss it around. It puts head on your knee and gazes at you as if you were a Rembrandt painting. It bounds indoors with enthusiasm when you call it.
文摘Acute fulminant pancreatitis was produced in dogs by injection of autobile into the main pancreatic duct.After injection the phospholipase A_2(PLA_2)activities in serum,lung lymph and bronchoalveolar lavage fluid(BAL)were elevated significantly,lung lymph flow and pulmonary transvascular potein clearance increased progressively,protein content and cell numbers in BAL in the experimental animals were significantly higher than those in the control animals.Furthermore the lung index,wet to dry lung weight ratio,extravascular lung water to bloodless dry lung weight ra- tio,extravascuar lung water to bloodless dry lung weight ratio increased significantly as compared to control animals.Pretreatment with PLA_2 inhibitor,chloroquine,blocked the changes mentioned above.This experiment suggests:1.PLA_2 activity in lung lymph fluid as well as in serum and BAL is elevated in acute hemorrhagic pancreatitis.2.Elevated PLA_2 activity may increase the pulmonary vascular permeability.3.PLA_2 is the major factor leading to pulmonary edema in acute hemorrhagic pancreatitis.4.Phagocytes contribute to the lung injury induced by PLA_2 to some ex- tent.
文摘The cloud computing technology is utilized for achieving resource utilization of remotebased virtual computer to facilitate the consumers with rapid and accurate massive data services.It utilizes on-demand resource provisioning,but the necessitated constraints of rapid turnaround time,minimal execution cost,high rate of resource utilization and limited makespan transforms the Load Balancing(LB)process-based Task Scheduling(TS)problem into an NP-hard optimization issue.In this paper,Hybrid Prairie Dog and Beluga Whale Optimization Algorithm(HPDBWOA)is propounded for precise mapping of tasks to virtual machines with the due objective of addressing the dynamic nature of cloud environment.This capability of HPDBWOA helps in decreasing the SLA violations and Makespan with optimal resource management.It is modelled as a scheduling strategy which utilizes the merits of PDOA and BWOA for attaining reactive decisions making with respect to the process of assigning the tasks to virtual resources by considering their priorities into account.It addresses the problem of pre-convergence with wellbalanced exploration and exploitation to attain necessitated Quality of Service(QoS)for minimizing the waiting time incurred during TS process.It further balanced exploration and exploitation rates for reducing the makespan during the task allocation with complete awareness of VM state.The results of the proposed HPDBWOA confirmed minimized energy utilization of 32.18% and reduced cost of 28.94% better than approaches used for investigation.The statistical investigation of the proposed HPDBWOA conducted using ANOVA confirmed its efficacy over the benchmarked systems in terms of throughput,system,and response time.
文摘Experimental high-velocity missile injuries were produced on both hind legs of 15 dogs.It was found that the concentration of vasoactive intestinal peptide-like immunoreactivity(VIP-LI)significantly elevated in both plasma and brain at the early stage after injuries.However,thechanges of VIP-LI concentration in the plasma and brain did not coincide with each other.The re-sults suggest that VIP-LI may participate in the post-traumatic general reaction.The significanceand machanism of the elevation of cerebral VIP-LI level after a severe non-cerebral trauma remainto be clarified.
文摘In the present experiment,we investigate the effects of orthodontic tooth rotation onneighboring teeth and periodontal tissues.The second maxillary incisors of 16 randomly selecteddogs were subjected to rotation at a magnitude of 100 grams and a moment of 550 g·mm in a du-ration of 3 to 56 days.Then sections were prepared for histological examination.The findings re-vealed that,due to tooth rotation,neighboring teeth were drifted and rotated(82%),and therewere disarrangement and hyalinization of the periodontal ligament(88%),remodeling of the pe-riodontium(86%)and root resorption(32%)were also observed.These results demonstratethat tooth rotation may exert marked effects on neighboring teeth and periodontal tissues,whichmay be of important clinical significance.
文摘In this study,the changes in activity and mRNA transcript of basic fibroblast growth fac-tor(bFGF)in lung injury and the effect of prostacyclin on the treatment of lung injury wereinvestigated.The result of the experiment revealed that there were not any bioactive bFGF andbFGF mRNA in the lung tissue of normal dogs.bFGF activity and bFGF mRNA were detectedonly in the injured lung tissue.Prostacyclin could slightly elevate the activity of bFGF andsignificantly elevate the level of bFGF mRNA.The findings suggest that(1)the level of bFGF in-creased after lung injury.(2)Prostacyclin could influence the expression of bFGF.(3)bFGF couldplay an important role in the repair of injury lung tissue.
文摘A comparative study was performed of the permeability of cell membranous structures in canine stunned myocardium and that of infarct myocardium by using colloidal lanthanum nitrate as an ultrastructure probe. Stunned myocardium was characterized by mitochondrial swelling, vacuolar formation, a few lanthanum granules deposrting inside cells and intact structure of such membranes as cell membrane, mitochondrial membrane and lysosome membrane.Infarct myocardium was characterized by a large number of lanthanum granules passing through ruptured cell membrane and depositing in the cytoplasm and mitochondria. These results suggest that membranous structure remained intact during the occurrence of stunned myocardium.
