Preparation of smallest microparticles of poly-D,L-lactide by modified precipitation method: influence of the process parameters.

abstract：:We present a new beam-shaping technique for two-color excitation fluorescence microscopy. We show that by simply inserting a properly designed shaded-ring filter in the illumination beam of smaller wavelength, it is possible to improve the effective optical sectioning capacity of such microscopes by 23%. Such an impro...

journal_title：Microscopy research and technique

authors： Ibáñez-López C,Escobar I,Saavedra G,Martínez-Corral M

更新日期：2004-06-01 00:00:00

abstract：:A major challenge when performing scanning electron microscopy and X-ray analysis on many ceramic materials is their electrical insulation properties, which leads to buildup of the surface charge and reduced contrast in the secondary electron image. A new procedure was established to quantitatively determine the neutr...

journal_title：Microscopy research and technique

authors： Wang Y,Kong M,Khan M,Zhang J,Lin C,Zeng Y

更新日期：2018-10-01 00:00:00

abstract：:The increasing importance of in vitro models has presented new challenges in SEM processing techniques. The present study has evaluated the quality of preservation of cultured human lens epithelial cells processed by critical point, Peldri II, and tert-butyl alcohol drying. Specimens processed by critical point drying...

journal_title：Microscopy research and technique

authors： Cantu-Crouch D,Howe WE,McCartney MD

更新日期：1995-04-01 00:00:00

abstract：:The perivitelline space of mammalian oocytes changes in size and composition during preimplantation development. Often overlooked in the past, this space contains a hyaluronan-rich extracellular matrix prior to fertilization and a cortical granule envelope following release of the cortical granules at fertilization. T...

journal_title：Microscopy research and technique

authors： Talbot P,Dandekar P

更新日期：2003-07-01 00:00:00

abstract：:The effects of short-term genistein exposure on ovarian folliculogenesis in immature rats were examined stereologically. To determine whether genistein acts as an estrogen agonist or antagonist, the results were compared with the effects of 17α-ethynylestradiol. Immature female rats received 50 mg/kg/bw of genistein i...

journal_title：Microscopy research and technique

authors： Medigović I,Ristić N,Trifunović S,Manojlović-Stojanoski M,Milošević V,Zikić D,Nestorović N

更新日期：2012-12-01 00:00:00

abstract：:We report on the microstructure and interfacial chemistry of thin films of pure and La-doped multiferroic bismuth ferrite (Bi1-x Lax FeO3 or BLFO), synthesized on Indium Tin Oxide-coated glass substrates by solution-deposition technique and studied using scanning transmission electron microscopy. Our results show that...

journal_title：Microscopy research and technique

authors： Basu J,Katoch R,Garg A,Barry Carter C

更新日期：2013-12-01 00:00:00

abstract：:Infection of humans with Helicobacter pylori results in the development of chronic gastritis and plays an important role in gastric ulcer pathogenesis. Despite the infiltration of the mucosa with specific immunocompetent cells and production of specific antibodies, the infection usually persists for life. This study w...

journal_title：Microscopy research and technique

authors： Jakob B,Birkholz S,Schneider T,Duchmann R,Zeitz M,Stallmach A

更新日期：2001-06-15 00:00:00

abstract：:We combine reflective confocal microscopy with multiphoton microscopy to form a minimally invasive technique to observe the cornea. The two imaging modalities allow detection of complementary information from the cornea. The autofluorescence signal shows the cytoplasm of epithelial cells, and the second harmonic gener...

journal_title：Microscopy research and technique

authors： Chen WL,Sun Y,Lo W,Tan HY,Dong CY

更新日期：2008-02-01 00:00:00

abstract：:Polycrystalline silver catalysts are used extensively for the partial oxidation of methanol to formaldehyde, which is then primarily incorporated in the synthesis process for adhesives and resins. In order to maximize formaldehyde production it is essential to gain a comprehensive understanding of the complex microstr...

journal_title：Microscopy research and technique

authors： Uwins PJ,Millar GJ,Nelson ML

更新日期：1997-03-01 00:00:00

abstract：BACKGROUND:Ultrasonic excitation (US) was applied to glass ionomer cement (GIC) during early set time to increase the advantageous properties of this material. PURPOSE:The aim of this in vitro study was to assess the inner porosity of GIC after US. STUDY DESIGN:A total of 16 specimens, for each material, were prepare...

journal_title：Microscopy research and technique

authors： Coldebella CR,Santos-Pinto L,Zuanon AC

更新日期：2011-01-01 00:00:00

abstract：:MIS, as a differentiate and antiproliferative agent, is precisely regulated, for example, at the transcriptional level by such transacting factors as SRY, and posttranslationally by testosterone. Processing of MIS most likely requires an as yet unknown in vivo protease which probably serves to control cleavage of MIS ...

journal_title：Microscopy research and technique

authors： Catlin EA,MacLaughlin DT,Donahoe PK

更新日期：1993-06-01 00:00:00

abstract：:Fatty acid and alkyl compositions of 1-alkyl-2,3-diacylglycerols (ADG) in the Harderian gland of the golden hamster were determined. Fatty acids of male ADG consisted of straight chain saturated acids ranging from C12 to C22. Both even- and odd-numbered acids were observed, indicating that acetyl- and propionyl-CoAs w...

journal_title：Microscopy research and technique

authors： Seyama Y,Otsuka H,Ohashi K,Vivien-Roels B,Pevet P

更新日期：1996-05-01 00:00:00

abstract：:Currently, composite materials dominate among the restorative materials used for direct aesthetic filling. Reinforcement of composites with glass fibers allows for the transfer of greater loads and better durability between the tooth tissue and the filling polymer. New approach to bonding liquid materials with composi...

journal_title：Microscopy research and technique

authors： Ostapiuk M,Tarczydło J,Łuszczewska-Sierakowska I,Śledź R,Tymczyna-Borowicz B

更新日期：2021-01-16 00:00:00

abstract：:This paper presents a snapshot view of the influence and direction of microcomputer technology for image analysis techniques in diagnostic pathology. Microcomputers have had considerable impact in bringing image analysis to wider application. Semi-automated tracing techniques are a simple means of providing objective ...

journal_title：Microscopy research and technique

authors： Jarvis LR

更新日期：1992-06-01 00:00:00

abstract：:Rhus succedanea is generally traded, distributed, and sold in the markets in its crude and raw form. This may have been mixed with adulterants, mismanaged by malpractices, and substituted with other closely related drugs having different effect. This study is therefore carried out to authenticate the plant through pha...

journal_title：Microscopy research and technique

authors： Khan SA,Barkatullah,Ibrar M,Ullah S

更新日期：2019-12-01 00:00:00

abstract：:Transmission electron microscopy (TEM) is a very useful and commonly used microscopy technique, used especially for the characterization of nanoparticles. However, the identification of the magnetic nanoparticle could be thought problematic in TEM analysis, due to the fact that the magnetic nanoparticles are usually f...

journal_title：Microscopy research and technique

authors： Dogan Ü,Çiftçi H,Cetin D,Suludere Z,Tamer U

更新日期：2017-02-01 00:00:00

abstract：:Chronic kidney disease (CKD) is a relevant disease in feline clinic. The tubulointerstitial damage, with collagen deposition and fibrosis, is an important result of this process. The aim of this study was to quantify and correlate the deposition of collagen and severity of interstitial fibrosis (IF) in the kidney from...

journal_title：Microscopy research and technique

authors： Morais GB,Viana DA,Silva FMO,Xavier Júnior FAF,Farias KM,Pessoa CD,Silveira JAM,Alves APNN,Mota MRL,Silva FDO,Sampaio CMS,Verdugo JMG,Evangelista JSAM

更新日期：2017-05-01 00:00:00

abstract：:Femtosecond electron diffraction is a rapidly advancing technique that holds a great promise for studying ultrafast structural dynamics in phase transitions, chemical reactions, and function of biological molecules at the atomic time and length scales. In this paper, we summarize our development of a tabletop femtosec...

journal_title：Microscopy research and technique

authors： Nie S,Wang X,Li J,Clinite R,Cao J

更新日期：2009-03-01 00:00:00

abstract：:Transmission electron microscopy (TEM) is the main tool for exploring the intracellular damage and organelle distribution. The cause of producing embryo cytoplsamic fragmentation is not completely understood. Since the fragments have detrimental effects on embryo development, the ultrastructural analysis of fragments ...

journal_title：Microscopy research and technique

authors： Halvaei I,Khalili MA,Nottola SA

更新日期：2016-06-01 00:00:00

abstract：:In certain cases of infertility in domestic species, and in the homozygous c-ros tyrosine kinase knockout mouse, males are infertile as a result of unopposed sperm swelling. This induces flagellar angulation, preventing their normal migration in the female tract. Angulation always occurs at the site of the cytoplasmic...

journal_title：Microscopy research and technique

authors： Cooper TG,Yeung CH

更新日期：2003-05-01 00:00:00

abstract：:Natriuretic peptides (NP), together with nitric oxide (NO) are powerful relaxing factors acting via a common second messenger, cyclic GMP (cGMP). Together with other vasoactive modulators, these vasorelaxing factors play an essential role in regulating the function of kidney glomeruli. The presence of NP receptors in ...

journal_title：Microscopy research and technique

authors： Lewko B,Stepinski J

更新日期：2002-05-15 00:00:00

abstract：:The applicability of the binomial frequency distribution is outlined for the analysis of the evolution nanoscale atomic clustering of dilute solute in an alloy subject to thermal ageing in 3D atom probe data. The conventional chi(2) statistics and significance testing are demonstrated to be inappropriate for compariso...

journal_title：Microscopy research and technique

authors： Moody MP,Stephenson LT,Ceguerra AV,Ringer SP

更新日期：2008-07-01 00:00:00

abstract：:Neuropeptides are peptides with profound effects on the nervous system. The function of neuropeptides can be studied in detail in the stomatogastric nervous system (STNS). Neuropeptides are ubiquitously distributed in the STNS and it contains well-studied neural circuits that are strongly modulated by neuropeptides. T...

journal_title：Microscopy research and technique

authors： Skiebe P

更新日期：2003-02-15 00:00:00

abstract：:Dystrophin-deficient muscles have repeated cycles of necrosis and regeneration, being susceptible to injury induced by muscle contractions. Some studies have demonstrated that tendons are also affected in mdx mice, based especially on the changes in biomechanical properties arising from the respective linked muscles. ...

journal_title：Microscopy research and technique

authors： De Aro AA,Guerra Fda R,Esquisatto MA,Nakagaki WR,Gomes L,Pimentel ER

更新日期：2015-01-01 00:00:00

abstract：:Growth rings were used to determine the root age of medicinal Paeonia lactiflora from four producing areas, and their corresponding paeoniflorin content were measured based on the identification of ages. Different P. lactiflora root samples of different ages were collected from the four major growing areas in China: B...

journal_title：Microscopy research and technique

authors： Zha LP,Cheng ME,Peng HS

更新日期：2012-09-01 00:00:00

abstract：:The glycoconjugate pattern of developing ovarian follicles in wild and cultured Senegalese sole Solea senegalensis was investigated by means of lectin histochemistry. Ovaries from cultured fish contained oocytes up to the late vitellogenic stage, whereas they reached the hydration stage in wild specimens. The follicul...

journal_title：Microscopy research and technique

authors： Accogli G,Zizza S,García-López A,Sarasquete C,Desantis S

更新日期：2012-08-01 00:00:00

abstract：:Directed growth cone movement is crucial for the correct wiring of the nervous system. This movement is governed by the concerted actions of cell surface receptors, signaling proteins, cytoskeleton-associated molecules, and molecular motors. In order to investigate the molecular basis of growth cone motility, we appli...

journal_title：Microscopy research and technique

authors： Buchstaller A,Jay DG

更新日期：2000-01-15 00:00:00

abstract：:Macro and micromorphology of different parts that is, sepals, petals, flowers, indumentum, and leaf shape of 22 Geranium L. taxa from Iran were studied. These taxa representing the eight sections of the genus as sect. Dissecta, sect. Geranium, and sect. Tuberosa (of subgen. Geranium); sect. Batrachioidea, sect. Divari...

journal_title：Microscopy research and technique

authors： Esfandani-Bozchaloyi S,Zaman W

更新日期：2018-12-01 00:00:00

abstract：:Polarized microscopy provides unique information on anisotropic samples. In its most complete implementation, namely Mueller microscopy, this technique is well suited for the visualization of fibrillar proteins orientations, with collagen in the first place. However, the intrinsic optical anisotropy of unstained tissu...

journal_title：Microscopy research and technique

authors： Nazac A,Bancelin S,Teig B,Ibrahim BH,Fernandez H,Schanne-Klein MC,De Martino A

更新日期：2015-08-01 00:00:00

abstract：:All termite species (Isoptera) are eusocial. These insects live in societies where the division of labor is a predominant characteristic, conditioned by the presence of castes with different morphology, ontogeny, and development. The soldier caste is unique among social insects and it is responsible for colony defense...

journal_title：Microscopy research and technique

authors： Santos CA,Costa-Leonardo AM

更新日期：2006-11-01 00:00:00