Objective: the differences of blood routine test results between venous blood and capillary blood were analyzed. Methods: The subjects of the study were 120 healthy outpatients from August 2019 to August 2021. They we...Objective: the differences of blood routine test results between venous blood and capillary blood were analyzed. Methods: The subjects of the study were 120 healthy outpatients from August 2019 to August 2021. They were divided into two groups according to the random method (n=60 for each group). The capillary blood was collected in the control group and venous blood was collected in the observation group. The results of WBC, HCT, RBC, Hb, PLT, MCHC, MCV and HCT were statistically compared between the two groups. Results: WBC of the observation group was lower than that of the control group, HCT, RBC, Hb, PLT and MCHC of the observation group were higher than those of the control group, p < 0.05 (the difference was statistically significant). Compared with the control group, the MCV and HCT of the observation group had no significant difference (P>0.05). Conclusion: venous blood collection in blood routine test can improve the accuracy of test results, and can be the preferred collection method in blood collection with high clinical value.展开更多
To study and analyze the influence of peripheral blood and venous blood on the test results in blood routine test. Methods: from September 2020 to June 2021, 152 patients who underwent blood routine test were included...To study and analyze the influence of peripheral blood and venous blood on the test results in blood routine test. Methods: from September 2020 to June 2021, 152 patients who underwent blood routine test were included in the laboratory department of our hospital. All patients collected peripheral blood and venous blood for blood routine test respectively. The blood source of peripheral blood for blood routine test was peripheral blood group, and the blood source of elbow vein blood for blood routine test was venous blood group, The differences of blood routine test results between the two groups at 0 min were compared, and the blood sources of the two groups were tested for many times at 0 min, 10 min and 30 min after blood collection. The test results were analyzed and compared, and the satisfaction of the two blood collection methods, time and pain were evaluated. Results: at 0 min of blood collection, the leukocyte count value of venous blood group was lower than that of peripheral blood group, while the erythrocyte count value, hemoglobin concentration value, platelet count value, erythrocyte backlog value and average hemoglobin concentration value of venous blood group were higher than those of peripheral blood group (P < 0.05);However, there was no significant difference between the two groups (P > 0.05);The test results of peripheral blood group and venous blood group were compared for multiple tests at 0 min, 10 min and 30 min after blood collection respectively. There was no significant difference in the test results of erythrocyte count and hemoglobin concentration in peripheral blood group at each time period (P > 0.05), while the test results of leukocyte count and platelet count at 0 min were different from those at 10 min. There was significant difference in the results of 30 min test (P < 0.05), indicating that the index value will change with time;There was no significant difference in the test results of leukocyte count, erythrocyte count, hemoglobin concentration and platelet count in the venous blood group (P > 0.05), indicating that the indexes in the blood were relatively stable;Comparing the satisfaction scores of the two groups, the scores of the two groups were higher, and the satisfaction of peripheral blood was slightly higher, but there was no significant difference between the two groups (P > 0.05).Conclusion: comparing the satisfaction of the two groups of patients, the acceptability of the two blood collection methods is very high. From the analysis of the test results, on the whole, the test results of peripheral blood are slightly lower than those of venous blood. It is analyzed that the reason for this result may be that the peripheral blood causes the damage of blood cells during the extrusion process and reduces the count, and the white blood cell count. The platelet count value will change over time and affect the test results, while the venous blood test results have little difference within 30min, indicating that various indexes in venous blood are relatively stable within a certain period of time, and the accuracy of test results is higher.展开更多
In the implementation process of construction projects, building materials are the key elements, and the quality of materials will affect the overall quality of the project. In terms of project quality control, constr...In the implementation process of construction projects, building materials are the key elements, and the quality of materials will affect the overall quality of the project. In terms of project quality control, construction enterprises pay special attention to the detection results of building materials, and the detection accuracy will be affected by equipment, operation level and detection environment. In order to ensure that the use of building materials meets the corresponding standards, it is necessary to strengthen the control of detection results, and realize the control of material quality and project quality through standardized detection operation. Next, the article analyzes the key factors that affect the test results of building materials testing, and puts forward specific solutions.展开更多
Objective:To review follow-up imaging after equivocal bone scans in men with castration resistant prostate cancer(CRPC)and examine the characteristics of equivocal bone scans that are associated with positive follow-u...Objective:To review follow-up imaging after equivocal bone scans in men with castration resistant prostate cancer(CRPC)and examine the characteristics of equivocal bone scans that are associated with positive follow-up imaging.Methods:We identified 639 men from five Veterans Affairs Hospitals with a technetium-99m bone scan after CRPC diagnosis,of whom 99(15%)had equivocal scans.Men with equivocal scans were segregated into“high-risk”and“low-risk”subcategories based upon wording in the bone scan report.All follow-up imaging(bone scans,computed tomography[CT],magnetic resonance imaging[MRI],and X-rays)in the 3 months after the equivocal scan were reviewed.Variables were compared between patients with a positive vs.negative follow-up imaging after an equivocal bone scan.Results:Of 99 men with an equivocal bone scan,43(43%)received at least one follow-up imaging test,including 32/82(39%)with low-risk scans and 11/17(65%)with high-risk scans(p=0.052).Of follow-up tests,67%were negative,14%were equivocal,and 19%were positive.Among those who underwent follow-up imaging,3/32(9%)low-risk men had metastases vs.5/11(45%)high-risk men(p=0.015).Conclusion:While 19%of all men who received follow-up imaging had positive follow-up imaging,only 9%of those with a low-risk equivocal bone scan had metastases versus 45%of those with high-risk.These preliminary findings,if confirmed in larger studies,suggest follow-up imaging tests for low-risk equivocal scans can be delayed while high-risk equivocal scans should receive follow-up imaging.展开更多
Biochar is a solid material obtained from the carbonization of biomass. Biochar is used on agricultural lands as a soil amendment to improve the fertility of the soils. Currently the most common method of producing bi...Biochar is a solid material obtained from the carbonization of biomass. Biochar is used on agricultural lands as a soil amendment to improve the fertility of the soils. Currently the most common method of producing biochar is through biochar stoves. There are two basic stove operations in the production of biochar. The first type of stove produces biochar by direct combustion of biomass. Here biomass is burnt inside a chamber in an oxygen limited environment. The resulting residue is the bio-char. The second type involves burning the biomass in one chamber and housing the biomass to be charred in the annular portion of an outer chamber. Heat is transferred from the burning fuel on the inner chamber to the material to be charred in the outer chamber. While the process of biochar production in these stoves is known, the basic principles of the stove design are not readily available. The design methodology for both the types was developed from first principles. Prototypes of both types were constructed based on the design developed and tested. The paper lists the basic principles in the design of biochar stoves and the test results.展开更多
HIV-indeterminate Western blotting(WB)results are typically obtained in WB confirmatory assays,and the number of indeterminate samples may increase with the detection of HIV infections,which will present considerable ...HIV-indeterminate Western blotting(WB)results are typically obtained in WB confirmatory assays,and the number of indeterminate samples may increase with the detection of HIV infections,which will present considerable challenges for the management of HIV/AIDS.Nucleic acid detection has been used as a laboratory test for screening suspected or indeterminate samples.However,the effectiveness of these assays for the differential diagnosis of HIV-indeterminate WB samples remained undetermined.In this study,210 subjects with HIV-indeterminate WB results were detected from 6360 positive HIV screening samples between 2015 and 2016 in southeastern China,in which HIV-indeterminate WB results accounted for 3.30%.The highest proportion of indeterminate results was observed in pregnant and lying-in women receiving physical examinations(16.67%),followed by that in voluntary blood donors(8.82%).The most common WB band patterns were p24,gpl60 and p24,and gpl60.The follow-up study revealed that the highest negative and positive conversion rates of HIV antibodies were in samples with a single p24 band(80.28%),and with gpl60 and p24 bands(86.21%),respectively.Among the Env,Gag,and Pol antibodies,samples with a Gag band showed the highest negative conversion rate(81.25%),whereas the highest positive conversion rate was observed in samples with an Env band(56.76%).In addition,quantitative and qualitative HIV nucleic acid testing exhibited the highest sensitivity(96.3%)and specificity(97.85%),respectively.Our results indicate a lower proportion of HIV indeterminate WB results in southeastern China compared to previous reports,and the follow-up re-examination of patients with HIV indeterminate results should be performed.Nucleic acid testing facilitates the identification of HIV infections.展开更多
Stemming from the renewed desire to requalify the former Brembana Valley railway route (inside one of the valleys of the Province of Bergamo and close to the important city of Milan), from Bergamo to Villa d’Almè...Stemming from the renewed desire to requalify the former Brembana Valley railway route (inside one of the valleys of the Province of Bergamo and close to the important city of Milan), from Bergamo to Villa d’Almè, in 2017, the Bergamo Transport Company and other partners have signed a memorandum of understanding. They have also entrusted a project company to develop a technical and economic viability study, which would be an update of a preliminary one presented in 2009. A private proposal for the realization of a test survey, useful for the required engineering project, has been submitted to the project company and accepted. For this reason, a team, comprising different companies, and among them also the Geomatics group at the University of Bergamo, was formed so as to perform this task and develop it in a degree thesis. The aim of the test survey is to evaluate a joint use of the new available technologies, so as to possibly get faster, more economic and thorough results, by performing a 3D metric analysis over two sub-areas selected along the route. The paper describes this experience and the achieved results. In particular, the areas of interest in the test project have been analyzed first thing with a GIS software and then surveyed with a multi-sensor approach, i.e. terrestrial laser scanner, GNSS techniques and UAV. The final integrated results allowed providing a metric model of the morphological and urban aspect for the territorial layout, useful also for further advanced GIS analyses. The analysis of the reached precisions has provided satisfactory results which agree with the metric requirements of the project. Further meaningful considerations can be derived from this test survey: the implementation of different techniques has helped to overcome problems due to hidden parts in complex objects, it has allowed to provide a faster survey and to test different technologies and software packages. The results have been quite satisfactory.展开更多
文摘Objective: the differences of blood routine test results between venous blood and capillary blood were analyzed. Methods: The subjects of the study were 120 healthy outpatients from August 2019 to August 2021. They were divided into two groups according to the random method (n=60 for each group). The capillary blood was collected in the control group and venous blood was collected in the observation group. The results of WBC, HCT, RBC, Hb, PLT, MCHC, MCV and HCT were statistically compared between the two groups. Results: WBC of the observation group was lower than that of the control group, HCT, RBC, Hb, PLT and MCHC of the observation group were higher than those of the control group, p < 0.05 (the difference was statistically significant). Compared with the control group, the MCV and HCT of the observation group had no significant difference (P>0.05). Conclusion: venous blood collection in blood routine test can improve the accuracy of test results, and can be the preferred collection method in blood collection with high clinical value.
文摘To study and analyze the influence of peripheral blood and venous blood on the test results in blood routine test. Methods: from September 2020 to June 2021, 152 patients who underwent blood routine test were included in the laboratory department of our hospital. All patients collected peripheral blood and venous blood for blood routine test respectively. The blood source of peripheral blood for blood routine test was peripheral blood group, and the blood source of elbow vein blood for blood routine test was venous blood group, The differences of blood routine test results between the two groups at 0 min were compared, and the blood sources of the two groups were tested for many times at 0 min, 10 min and 30 min after blood collection. The test results were analyzed and compared, and the satisfaction of the two blood collection methods, time and pain were evaluated. Results: at 0 min of blood collection, the leukocyte count value of venous blood group was lower than that of peripheral blood group, while the erythrocyte count value, hemoglobin concentration value, platelet count value, erythrocyte backlog value and average hemoglobin concentration value of venous blood group were higher than those of peripheral blood group (P < 0.05);However, there was no significant difference between the two groups (P > 0.05);The test results of peripheral blood group and venous blood group were compared for multiple tests at 0 min, 10 min and 30 min after blood collection respectively. There was no significant difference in the test results of erythrocyte count and hemoglobin concentration in peripheral blood group at each time period (P > 0.05), while the test results of leukocyte count and platelet count at 0 min were different from those at 10 min. There was significant difference in the results of 30 min test (P < 0.05), indicating that the index value will change with time;There was no significant difference in the test results of leukocyte count, erythrocyte count, hemoglobin concentration and platelet count in the venous blood group (P > 0.05), indicating that the indexes in the blood were relatively stable;Comparing the satisfaction scores of the two groups, the scores of the two groups were higher, and the satisfaction of peripheral blood was slightly higher, but there was no significant difference between the two groups (P > 0.05).Conclusion: comparing the satisfaction of the two groups of patients, the acceptability of the two blood collection methods is very high. From the analysis of the test results, on the whole, the test results of peripheral blood are slightly lower than those of venous blood. It is analyzed that the reason for this result may be that the peripheral blood causes the damage of blood cells during the extrusion process and reduces the count, and the white blood cell count. The platelet count value will change over time and affect the test results, while the venous blood test results have little difference within 30min, indicating that various indexes in venous blood are relatively stable within a certain period of time, and the accuracy of test results is higher.
文摘In the implementation process of construction projects, building materials are the key elements, and the quality of materials will affect the overall quality of the project. In terms of project quality control, construction enterprises pay special attention to the detection results of building materials, and the detection accuracy will be affected by equipment, operation level and detection environment. In order to ensure that the use of building materials meets the corresponding standards, it is necessary to strengthen the control of detection results, and realize the control of material quality and project quality through standardized detection operation. Next, the article analyzes the key factors that affect the test results of building materials testing, and puts forward specific solutions.
基金The study was supported by the NIH/NCI under Award Number P50CA09231(WJA)and NIH K24 CA160653(SJF).
文摘Objective:To review follow-up imaging after equivocal bone scans in men with castration resistant prostate cancer(CRPC)and examine the characteristics of equivocal bone scans that are associated with positive follow-up imaging.Methods:We identified 639 men from five Veterans Affairs Hospitals with a technetium-99m bone scan after CRPC diagnosis,of whom 99(15%)had equivocal scans.Men with equivocal scans were segregated into“high-risk”and“low-risk”subcategories based upon wording in the bone scan report.All follow-up imaging(bone scans,computed tomography[CT],magnetic resonance imaging[MRI],and X-rays)in the 3 months after the equivocal scan were reviewed.Variables were compared between patients with a positive vs.negative follow-up imaging after an equivocal bone scan.Results:Of 99 men with an equivocal bone scan,43(43%)received at least one follow-up imaging test,including 32/82(39%)with low-risk scans and 11/17(65%)with high-risk scans(p=0.052).Of follow-up tests,67%were negative,14%were equivocal,and 19%were positive.Among those who underwent follow-up imaging,3/32(9%)low-risk men had metastases vs.5/11(45%)high-risk men(p=0.015).Conclusion:While 19%of all men who received follow-up imaging had positive follow-up imaging,only 9%of those with a low-risk equivocal bone scan had metastases versus 45%of those with high-risk.These preliminary findings,if confirmed in larger studies,suggest follow-up imaging tests for low-risk equivocal scans can be delayed while high-risk equivocal scans should receive follow-up imaging.
文摘Biochar is a solid material obtained from the carbonization of biomass. Biochar is used on agricultural lands as a soil amendment to improve the fertility of the soils. Currently the most common method of producing biochar is through biochar stoves. There are two basic stove operations in the production of biochar. The first type of stove produces biochar by direct combustion of biomass. Here biomass is burnt inside a chamber in an oxygen limited environment. The resulting residue is the bio-char. The second type involves burning the biomass in one chamber and housing the biomass to be charred in the annular portion of an outer chamber. Heat is transferred from the burning fuel on the inner chamber to the material to be charred in the outer chamber. While the process of biochar production in these stoves is known, the basic principles of the stove design are not readily available. The design methodology for both the types was developed from first principles. Prototypes of both types were constructed based on the design developed and tested. The paper lists the basic principles in the design of biochar stoves and the test results.
基金supported by grants from the Cultivation of Young Talents Project Fund from the Fujian Provincial Health and Family Planning Commission (Grant No. 2015-ZQN-ZD11)the Pilot Project of Fujian Provincial Department of Science and Technology (Grant No. 2016Y0010)+2 种基金the Jiangsu Provincial Project of Invigorating Health Care through Science, Technology and EducationJiangsu Provincial Medical Youth Talentthe Project of Invigorating Health Care through Science, Technology and Education (Grant No. QNRC2016621)
文摘HIV-indeterminate Western blotting(WB)results are typically obtained in WB confirmatory assays,and the number of indeterminate samples may increase with the detection of HIV infections,which will present considerable challenges for the management of HIV/AIDS.Nucleic acid detection has been used as a laboratory test for screening suspected or indeterminate samples.However,the effectiveness of these assays for the differential diagnosis of HIV-indeterminate WB samples remained undetermined.In this study,210 subjects with HIV-indeterminate WB results were detected from 6360 positive HIV screening samples between 2015 and 2016 in southeastern China,in which HIV-indeterminate WB results accounted for 3.30%.The highest proportion of indeterminate results was observed in pregnant and lying-in women receiving physical examinations(16.67%),followed by that in voluntary blood donors(8.82%).The most common WB band patterns were p24,gpl60 and p24,and gpl60.The follow-up study revealed that the highest negative and positive conversion rates of HIV antibodies were in samples with a single p24 band(80.28%),and with gpl60 and p24 bands(86.21%),respectively.Among the Env,Gag,and Pol antibodies,samples with a Gag band showed the highest negative conversion rate(81.25%),whereas the highest positive conversion rate was observed in samples with an Env band(56.76%).In addition,quantitative and qualitative HIV nucleic acid testing exhibited the highest sensitivity(96.3%)and specificity(97.85%),respectively.Our results indicate a lower proportion of HIV indeterminate WB results in southeastern China compared to previous reports,and the follow-up re-examination of patients with HIV indeterminate results should be performed.Nucleic acid testing facilitates the identification of HIV infections.
文摘Stemming from the renewed desire to requalify the former Brembana Valley railway route (inside one of the valleys of the Province of Bergamo and close to the important city of Milan), from Bergamo to Villa d’Almè, in 2017, the Bergamo Transport Company and other partners have signed a memorandum of understanding. They have also entrusted a project company to develop a technical and economic viability study, which would be an update of a preliminary one presented in 2009. A private proposal for the realization of a test survey, useful for the required engineering project, has been submitted to the project company and accepted. For this reason, a team, comprising different companies, and among them also the Geomatics group at the University of Bergamo, was formed so as to perform this task and develop it in a degree thesis. The aim of the test survey is to evaluate a joint use of the new available technologies, so as to possibly get faster, more economic and thorough results, by performing a 3D metric analysis over two sub-areas selected along the route. The paper describes this experience and the achieved results. In particular, the areas of interest in the test project have been analyzed first thing with a GIS software and then surveyed with a multi-sensor approach, i.e. terrestrial laser scanner, GNSS techniques and UAV. The final integrated results allowed providing a metric model of the morphological and urban aspect for the territorial layout, useful also for further advanced GIS analyses. The analysis of the reached precisions has provided satisfactory results which agree with the metric requirements of the project. Further meaningful considerations can be derived from this test survey: the implementation of different techniques has helped to overcome problems due to hidden parts in complex objects, it has allowed to provide a faster survey and to test different technologies and software packages. The results have been quite satisfactory.
