Han Wang

Abstract The authors’ series of studies aimed to explore the potential of terahertz time-domain spectroscopy (THz-TDS) in cellulose crystallographic studies, since THz radiation can detect most intermolecular vibrations and respond to lattice phonons. In this study, we tracked changes in four types of cellulose after ball milling. As the planetary ball milling time increases, it is observed through electron microscopy that the four types of cellulose particles are gradually destroyed into finer

Abstract Terahertz time-domain spectroscopy (THz-TDS) has expanded possibilities in cellulose crystallography research, as THz radiation detects most intermolecular vibrations and responds to the phonons of crystalline lattices. In this study, we traced the transformation of the cellulose crystalline lattice from cellulose I to cellulose II by THz-TDS and X-ray powder diffraction. Cellulose II was obtained by treating cellulose I with NaOH of different concentrations (0 wt%–20 wt%, at 2 wt% inte

Abstract Given that terahertz (THz) radiation responds to intermolecular forces such as hydrogen bonds, THz time-domain spectroscopy (THz-TDS) has expanded possibilities in cellulose research. In this study, THz-TDS was used to investigate the crystallinity of three types of cellulose-based materials. Microcrystalline cellulose (MCC) and wood were ball milled at different times, and pseudo-wood was a mixture of MCC and lignin of different mass fractions. All the samples showed peaks at 3.04 THz

Abstract The author's series of studies aimed to explore the potential of terahertz time-domain spectroscopy (THz-TDS) in cellulose crystallography research, as THz radiation can detect most intermolecular vibrations and respond to the lattice phonons. In this study, we used THz-TDS and X-ray powder diffraction (XRD) to meticulously trace the changes in the four types of cellulose after ball milling. The most captivating observation was the crystal transition from cellulose I to cellulose II (ce

广州管圆线虫(Angiostrongylus cantonensis)是动物寄生虫,终宿主为哺乳动物,主要是鼠类,中间宿主是陆生螺类或淡水螺类,如福寿螺、玛瑙螺等[1,2].人常因生食或半生食含有广州管圆线虫Ⅲ期幼虫的螺肉而感染,幼虫在人体内多停留在中枢神经系统,可导致嗜酸性粒细胞增多性脑炎或脑膜脑炎,严重者可导致死亡.近年来,随着人们生活水平的不断提高、饮食结构的变化和与外界接触的增多,广州管圆线虫病病例数迅速增加.大理市洱海周边居民素有食用螺类的习惯.因此,为了解该地区广州管圆线虫疫源地的分布和近期当地居民感染状况,本课题组于2009年10月至2010年10月,对该地区广州管圆线虫的中间宿主福寿螺以及当地居民喜食的洱海螺等感染源进行初步调查. 关键词：广州管圆线虫;感染源;洱海周边

Abstract. The Semantic Vernacular System is a novel naming system for creating named, machine-interpretable descriptions for groups of organisms. Unlike the traditional scientific naming system, which is based on evolutionary relationships, it emphasizes the observable features of organisms. By independently naming the descriptions composed of sets of observational features, as well as maintaining connections to scientific names, it preserves the observational data used to identify organisms. Th

Abstract Wood is attracting attention as an environmentally friendly resource that does not burden the environment and is indispensable for the realization of a low-carbon society. In the field of construction, the use of heat-treated wood has been gaining traction in recent years for the purpose of improving dimensional stability and decay resistance. However, there have been few studies on the non-destructive measurement of the strength of heat-treated wood. Only cellulose, which accounts for