197,009 research outputs found
Rezension zu: M. Heyn: Sexualpädagogik im Kreuzfeuer. Der Sexualkunde-Atlas 1969 und die Kritik an schulischer Aufklärung
No full textBischoff S. Rezension zu: M. Heyn: Sexualpädagogik im Kreuzfeuer. Der Sexualkunde-Atlas 1969 und die Kritik an schulischer Aufklärung . H-Soz-Kult. 2024
Morphodynamics of human endometrium during menopause and postmenopause (aging) as seen by scanning electron microscopy
No full textThe ultrastructural characteristics of the uterine mucosa have been evaluated in menopause and postmenopause by using integrated data of transmission and scanning electron microscopy. Although the surface epithelium is always present, a continuous process of flattening, deciliation as well as a reduction in microvilli number and density is evident as age proceeds. An outstanding and original finding is the formation of complex lamellar structures, the microplicae, on the apical surface of uterine epithelial cells. These may represent a sort of "vaginalization" not only increasing surface area but acting as a protective cushion against eventual injuries due to decreasing estrogen levels. These data may complement ordinary gynecologic procedures when evaluating reproductive function in aging women
Scanning electron microscopy study of palatine salivary glands of rabbits.
No full textThe structure of the palatine salivary glands of rabbits was studied employing scanning electron microscopic methods. The fractured surface of the palatine salivary glands revealed that they were formed of small lobuli separated by interlobular spaces containing numerous bundles of collagen fibers. The NaOH treated specimens showed the organization of the collagen fibrils in their original location. In the interstitial stroma compartment, the collagen fibrils revealed a complex three-dimensional arrangement forming channel-like structures for supporting nerve fibers, small vessels and capillaries. Single groups of acinar cells were clearly demonstrated, and each acinus was enveloped by a characteristic basal lamina showing a sponge-like structure made up of several interconnected meshes of collagen fibrils. Furthermore, taking advantage of the ODO method and field emission scanning electron microscopy, within the cytoplasm of secretory acinar cells numerous organelles were clearly observed in a three-dimensional way such as Golgi complex lamellae, rough endoplasmic reticulum, mitochondria and secretory granules. All these cytoplasmic components revealed their real and microtopographical arrangement in some areas of the acinar cytoplasm clearly suggesting their direct involvement in energetic as well as secretory activities
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Microarchitecture of the cat testis with special reference to Leydig cells. A three-dimensional study by alkali maceration method and scanning electron microscopy.
No full textThis paper describes for the first time the three dimensional organization of Leydig cells in the adult cat. Samples were obtained by castration of inpatients of a University clinics. Testis were macerated with NaOH in order to study either the cells as well as the extracellular matrix of the testis. Leydig cells showed between them a fine canalicular-like system formed by microvilli; this arrangement may favor passage of hormones and growth factors. Collagen fibers, in turn, formed a real three dimensional scaffold around seminiferous tubules and in the testicular lamina propria
On the Numerical Solution of Many-Body Contact Dynamics Problems Formulated as Complementarity Problems
No full textOn the numerical solution of many-body dynamics problems formulated as complementarity problems
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"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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