A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equatio...A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equation which is briefly introduced in this work, and the sea quark and gluon distributions are only generated by the quantum chromodynamics processes. We find that the patton distributions can explain the pion-nucleon experiments data well, and it can also be compared with the data from the leading neutron data of experiments at HERA. The momentum distributions among the partons are discussed and our results are consistent with some models.展开更多
Asian Herpetological Research （AHR）, an international English language joumal, is published quarterly by the Chengdu Institute of Biology （CIB）, Chinese Academy of Sciences, and the Science Press of China, coopera...Asian Herpetological Research （AHR）, an international English language joumal, is published quarterly by the Chengdu Institute of Biology （CIB）, Chinese Academy of Sciences, and the Science Press of China, cooperated with the Asiatic Herpetological Research Society （AHRS）, with its registered numbers： CN 51-1735/Q and ISSN 2095- 0357. The scope of the journal includes all contemporary herpetological research areas including taxonomy, fauna, morphology, phylogeny, systematics, evolution, zoogeography, physiology, ecology, toxicology and conservation biology of amphibians and reptiles.展开更多
A new type of machinable bioactive glass-ceramics for bone substitution has been developed in the glass system SiO_2-MgO-K_2O-F^--CaO-P_2O_5, which contains Mg- muscovite [K_2Mg_5 (Si_8O_(20)) F_4] and fluorapatite as...A new type of machinable bioactive glass-ceramics for bone substitution has been developed in the glass system SiO_2-MgO-K_2O-F^--CaO-P_2O_5, which contains Mg- muscovite [K_2Mg_5 (Si_8O_(20)) F_4] and fluorapatite as the two main crystal phases. The phase separation and the crystallization of the glass have been studied. A series of tests have showed that the material is good at mechanical property and bioactivity. Espe- cially, by analysing the structure of the interface layer between the material and the bone of animal with scanning electron microscope, electron probe, etc., it has been found that the new bone hydroxya- patite is formed on the surface of the material so that the material is connected firmly with the bone.展开更多
At about the same time in 1940s when Erwin Schrdinger published his famous little book What Is Life, which sparked the birth of molecular biology, the term epigenetics was coined by the English biologist Conrad Wadd...At about the same time in 1940s when Erwin Schrdinger published his famous little book What Is Life, which sparked the birth of molecular biology, the term epigenetics was coined by the English biologist Conrad Waddington. The concept of epi-inheritance can be traced back to French naturalist Jean-Baptiste Lamarck’s idea of "inheritance展开更多
Over the past two decades, improved diagnosis, pharmaceutical therapies, and interventional strategies have impressively improved the armamentarium of modern cardiologists in the fight against the most incident and le...Over the past two decades, improved diagnosis, pharmaceutical therapies, and interventional strategies have impressively improved the armamentarium of modern cardiologists in the fight against the most incident and lethal diseases： heart failure, ischemic heart disease, and arrhythmia. The innovations in the field have mostly been enabled by inventions based on hypothesis-driven approaches. The invention and development of key cardiac biomarkers, such as natriuretic peptides and cardiac-specific troponins, may serve as examples.展开更多
World’s largest nylon and spandex producer establishes the state of art commercial textileresearch center in ChinaINVISTA announced building a new research facility inChina's Mainland in September 23 to further
文摘A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equation which is briefly introduced in this work, and the sea quark and gluon distributions are only generated by the quantum chromodynamics processes. We find that the patton distributions can explain the pion-nucleon experiments data well, and it can also be compared with the data from the leading neutron data of experiments at HERA. The momentum distributions among the partons are discussed and our results are consistent with some models.
文摘Asian Herpetological Research （AHR）, an international English language joumal, is published quarterly by the Chengdu Institute of Biology （CIB）, Chinese Academy of Sciences, and the Science Press of China, cooperated with the Asiatic Herpetological Research Society （AHRS）, with its registered numbers： CN 51-1735/Q and ISSN 2095- 0357. The scope of the journal includes all contemporary herpetological research areas including taxonomy, fauna, morphology, phylogeny, systematics, evolution, zoogeography, physiology, ecology, toxicology and conservation biology of amphibians and reptiles.
文摘A new type of machinable bioactive glass-ceramics for bone substitution has been developed in the glass system SiO_2-MgO-K_2O-F^--CaO-P_2O_5, which contains Mg- muscovite [K_2Mg_5 (Si_8O_(20)) F_4] and fluorapatite as the two main crystal phases. The phase separation and the crystallization of the glass have been studied. A series of tests have showed that the material is good at mechanical property and bioactivity. Espe- cially, by analysing the structure of the interface layer between the material and the bone of animal with scanning electron microscope, electron probe, etc., it has been found that the new bone hydroxya- patite is formed on the surface of the material so that the material is connected firmly with the bone.
文摘At about the same time in 1940s when Erwin Schrdinger published his famous little book What Is Life, which sparked the birth of molecular biology, the term epigenetics was coined by the English biologist Conrad Waddington. The concept of epi-inheritance can be traced back to French naturalist Jean-Baptiste Lamarck’s idea of "inheritance
基金supported by grants from the German Ministry of Education and Research (BMBF)Deutsches Zentrum für Herz-Kreislauf-Forschung (DZHK, German Centre for Cardiovascular Research), and Siemens Health Care Gmb H (Siemens/University Heidelberg Joint Research Project: Care4DCM) of Germany as well as the European Union (FP7 Best Ageing)supported by grants from Siemens Health Care Gmb H (Siemens/University Heidelberg Joint Research Project: Care4DCM) of Germany and the European Union (FP7 Best Ageing)
文摘Over the past two decades, improved diagnosis, pharmaceutical therapies, and interventional strategies have impressively improved the armamentarium of modern cardiologists in the fight against the most incident and lethal diseases： heart failure, ischemic heart disease, and arrhythmia. The innovations in the field have mostly been enabled by inventions based on hypothesis-driven approaches. The invention and development of key cardiac biomarkers, such as natriuretic peptides and cardiac-specific troponins, may serve as examples.
文摘World’s largest nylon and spandex producer establishes the state of art commercial textileresearch center in ChinaINVISTA announced building a new research facility inChina's Mainland in September 23 to further
