Aim: To evaluate whether the study of seminal germ cell morphology (SGCM) and semen biochemistry could befruitfully utilized for the diagnosis and management of azoospermic subjects. Methods: In the semen, mature andi...Aim: To evaluate whether the study of seminal germ cell morphology (SGCM) and semen biochemistry could befruitfully utilized for the diagnosis and management of azoospermic subjects. Methods: In the semen, mature andimmature germ cells are contributed by the testes, 70% of glycerylphosphoryl choline (GPC) by the epididymis, fruc-tose mostly or solely by the seminal vesicles and acid phosphate (ACP) by the prostate. In 16 normal volunteers, 12vasectomized subjects and 186 azoospennic subjects, these parameters have been studied and the data have been ana-lyzed. Results: Both mature and immature germ cells are absent in the semen of vasectomized subjects as well as inobstructive azoospennia; GPC level is also significantly decreased in both these groups. In cases with non-obstructiveazoospermia immature germ cells are present and seminal GPC, ACP and fructose levels are normal. The diagnosis ofobstructive and non-obstructive azoospermia based on these parameters correlated well with 'correct' testicular biopsyfindings. In some cases of azoospermia due to hypospermatogenesis or spermatogenic developmental arrest, the SGCMstudies were very helpful in objectively monitoring the response of the germinal tissue to specific treaunents. Conclu-sion: SGCM and semen biochemical parameters are very valuable non-invasive markers for differentiating obstructivefrom non-obstructive azoospermia. The SGCM findings serve as a dependable non-invasive testicular marker with highpredictive value. (Asian J Androl 2001 Mar; 3: 55-62)展开更多
Oil palm ash(OPA)is an agro-industry waste and it has disposable problems.In the present study,an effort was made for value addition to OPA by incorporating it as a micro-filler in different concentration(0,10,20,30,4...Oil palm ash(OPA)is an agro-industry waste and it has disposable problems.In the present study,an effort was made for value addition to OPA by incorporating it as a micro-filler in different concentration(0,10,20,30,40,and 50%)and sizes(100,200,and 300 mesh size particles)in the epoxy matrix.Prepared micro OPA was having a crystallinity index of 65.4%,high inorganic elements,and smooth surface morphology.Fabricated composites had higher void content as compared to neat epoxy matrix.Mechanical properties of fabricated composites had a maximum value at 30%loading of 300 mesh-size filler due to its low void content and size as compared to filler of 100 and 200 mesh size.Further increase in the concentration of OPA filler after 30 wt%of loading leads to the agglomeration of OPA microparticles and thereby resulted in the reduction of mechanical characteristics such as tensile strength,tensile modulus,flexural strength and flexural modulus of the composites.However,elongation at break decreased with increase in filler content at all percentage.Thermal stability and char residue percentage of composite increased with the concentration of filler at all percentage.Surface morphology of composite showed that OPA incorporation lead towards its roughness and cracks were originated from the site of OPA embedded in the epoxy matrix.The 300 mesh-size particles were having the best effect on composite as compared to 100 and 200 mesh-size filler.展开更多
In this paper we briefly describe our effort in developing standards for immersive display interfaces in virtual manufacturing.This work is being conducted in collaboration with the National Institute of Standards and...In this paper we briefly describe our effort in developing standards for immersive display interfaces in virtual manufacturing.This work is being conducted in collaboration with the National Institute of Standards and Technology(NIST).First we review the concept of virtual manufacturing,discuss its scope and lay the contextual foundation for describing our application.Next we describe a prototype implementation of immersive display interfaces in virtual manufacturing.This prototype is based on processing the output of a factory simulation model.Finally we describe the standards emerging from this prototype.展开更多
文摘Aim: To evaluate whether the study of seminal germ cell morphology (SGCM) and semen biochemistry could befruitfully utilized for the diagnosis and management of azoospermic subjects. Methods: In the semen, mature andimmature germ cells are contributed by the testes, 70% of glycerylphosphoryl choline (GPC) by the epididymis, fruc-tose mostly or solely by the seminal vesicles and acid phosphate (ACP) by the prostate. In 16 normal volunteers, 12vasectomized subjects and 186 azoospennic subjects, these parameters have been studied and the data have been ana-lyzed. Results: Both mature and immature germ cells are absent in the semen of vasectomized subjects as well as inobstructive azoospennia; GPC level is also significantly decreased in both these groups. In cases with non-obstructiveazoospermia immature germ cells are present and seminal GPC, ACP and fructose levels are normal. The diagnosis ofobstructive and non-obstructive azoospermia based on these parameters correlated well with 'correct' testicular biopsyfindings. In some cases of azoospermia due to hypospermatogenesis or spermatogenic developmental arrest, the SGCMstudies were very helpful in objectively monitoring the response of the germinal tissue to specific treaunents. Conclu-sion: SGCM and semen biochemical parameters are very valuable non-invasive markers for differentiating obstructivefrom non-obstructive azoospermia. The SGCM findings serve as a dependable non-invasive testicular marker with highpredictive value. (Asian J Androl 2001 Mar; 3: 55-62)
基金by Ministry Research,Technology and Higher Education of Republic of Indonesia by World Class Professor(WCP),Programme scheme No T/46/D2.3/KK.04.05/2019.
文摘Oil palm ash(OPA)is an agro-industry waste and it has disposable problems.In the present study,an effort was made for value addition to OPA by incorporating it as a micro-filler in different concentration(0,10,20,30,40,and 50%)and sizes(100,200,and 300 mesh size particles)in the epoxy matrix.Prepared micro OPA was having a crystallinity index of 65.4%,high inorganic elements,and smooth surface morphology.Fabricated composites had higher void content as compared to neat epoxy matrix.Mechanical properties of fabricated composites had a maximum value at 30%loading of 300 mesh-size filler due to its low void content and size as compared to filler of 100 and 200 mesh size.Further increase in the concentration of OPA filler after 30 wt%of loading leads to the agglomeration of OPA microparticles and thereby resulted in the reduction of mechanical characteristics such as tensile strength,tensile modulus,flexural strength and flexural modulus of the composites.However,elongation at break decreased with increase in filler content at all percentage.Thermal stability and char residue percentage of composite increased with the concentration of filler at all percentage.Surface morphology of composite showed that OPA incorporation lead towards its roughness and cracks were originated from the site of OPA embedded in the epoxy matrix.The 300 mesh-size particles were having the best effect on composite as compared to 100 and 200 mesh-size filler.
文摘In this paper we briefly describe our effort in developing standards for immersive display interfaces in virtual manufacturing.This work is being conducted in collaboration with the National Institute of Standards and Technology(NIST).First we review the concept of virtual manufacturing,discuss its scope and lay the contextual foundation for describing our application.Next we describe a prototype implementation of immersive display interfaces in virtual manufacturing.This prototype is based on processing the output of a factory simulation model.Finally we describe the standards emerging from this prototype.
