Abstract:
:Effective protocols for controlling crystal structure, size, and morphology attract considerable interest given the requirement for particles of modal size and shape in many areas of materials fabrication and the importance of crystallochemical selectivity in determining the exploitable properties of inorganic solids. For this reason biomineralization merits particular attention since many biominerals are deposited in a highly controlled manner to produce crystals which are uniformly sized and crystallographically unique. Studies of biominerals have revealed that while a complex array of strategies have evolved for regulating their formation, one feature is common to the biological paradigm; interactions between organized biopolymeric assemblies and the nascent inorganic solids play a pivotal role in controlling the crystallization process. In order to gain a better understanding of the molecular interactions which take place at organic-inorganic interface and address the fundamental chemical problems of biomineralization, a crystal chemical approach has been adopted. Organized organic assemblies (phospholipid vesicles, Langmuir monolayers, polypetide templates) of precise molecular design (head group identity, packing conformation, peptide sequence, etc.) were assayed for their effectiveness in controlling the nucleation and growth of inorganic solids. This work has established that through systematic changes in the nature of the organic matrix the size, crystallographic orientation, and growth of the mineral phase can be controlled. Critical to this process was the translation of specific molecular information at the organic-inorganic interface: epitaxial alignment, stereochemical complementarity, and electrostatic interactions were an essential feature of this recognition event.
journal_name
Microsc Res Techjournal_title
Microscopy research and techniqueauthors
Heywood BRdoi
10.1002/jemt.1070270504subject
Has Abstractpub_date
1994-04-01 00:00:00pages
376-88issue
5eissn
1059-910Xissn
1097-0029journal_volume
27pub_type
杂志文章abstract::This study evaluated the fluoride (F) release and remineralizing potential of varnishes containing sodium fluoride (5% NaF), 5% NaF with CPP-ACP and 5% NaF with TCP in early caries lesions in primary teeth. To determine the F release at 1, 4, 6, 24, 72, and 168 hr, strips were covered with the varnishes and immersed i...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23662
更新日期:2020-12-05 00:00:00
abstract::Several processing techniques of digital images allowed us to quantify the percentage of cell surface covered by microprojections (microvilli or microplicae) (SCM), the adhesion between epithelial cells by the parameter intercellular junctions (IJ), the size (cell area), shape (cell shape) and shade (cell shade) of ce...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20833
更新日期:2010-10-01 00:00:00
abstract::Micromass cultures represent a convenient means of studying chondrocyte physiology in the context of a tridimensional culture model. In this study, we present the first ultrastructural analysis of the distribution and organization of the extracellular components in micromasses in comparison with their cartilaginous co...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20210
更新日期:2005-08-15 00:00:00
abstract::The present investigation was designed to throw light on the microbial status of bakery products available in bakeries and supermarkets of Lahore. Different bakery samples such as biscuits, pizza, patties were collected from different localities such as Anar Kali, Chauburji, Faisal Town, Iqbal Town, Model Town, Muslim...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23103
更新日期:2019-02-01 00:00:00
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journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20745
更新日期:2010-01-01 00:00:00
abstract::The subcellular behavior of aluminum and indium, used in medical and industrial fields, was studied in the gastric mucosa and the liver after their intragastric administration to rats, using, two of the most sensitive methods of observation and microanalysis, the transmission electron microscopy, and the secondary ion...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.21041
更新日期:2012-02-01 00:00:00
abstract::TGF-beta1 is an important regulator of the normal and malignant prostate. In the non-malignant prostate, TGF-beta1 stimulates cell differentiation, inhibits epithelial cell proliferation, and induces epithelial cell death. TGF-beta1 is secreted into semen where it is an important immunosuppressive factor. Prostate can...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/1097-0029(20010215)52:4<411::AID-JEMT1026>
更新日期:2001-02-15 00:00:00
abstract::Morphological parameters and renal flow were assessed and measured in six clinically healthy dogs with negative serological and parasitological examinations for canine visceral leishmaniasis (CVL) and six dogs with CVL-positive serological and parasitological tests and asymptomatic condition of the disease. Kidney len...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22677
更新日期:2016-07-01 00:00:00
abstract::The ruminant placenta has a very uniform gross structure based on localised areas of fetomaternal membrane apposition and proliferation to form placentomes. There is no consistency, however, in the number or size of these placentomes (6-150), nor in the villus architecture of the individual placentome. The one consist...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19970701/15)38:1/2<88::AID
更新日期:1997-07-01 00:00:00
abstract::The ionic liquids (ILs) are recognized as the potential solvents for the pretreatment of lignocellulosic materials before biomass conversion. However, little knowledge of how the cell wall of biomass responds to the IL locally and dynamically during the pretreatment is available. In the current work, the process of IL...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22379
更新日期:2014-08-01 00:00:00
abstract::The mammalian gallbladder mucosa is lined by a simple columnar epithelium. Typical surface epithelial cells (principal cells) contain short microvilli, secretory granules, dense bodies, mitochondria and Golgi apparatus. Dense bodies are thought to be lysosomes. Secretory granules contain mucous glycoproteins which are...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19970915)38:6<616::AID-JEM
更新日期:1997-09-15 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
pub_type: 杂志文章
doi:10.1002/jemt.23700
更新日期:2021-01-16 00:00:00
abstract::In present study, multiple microscope techniques were used for the systematics identification of the species Asplenium dalhousiae. The plant was collected from different phytogeographical and its natural habitat of Pakistan, where it shows higher diversity. Morphology, foliar epidermal anatomy, and spore morphological...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23189
更新日期:2019-04-01 00:00:00
abstract::Based on direct reducing of copper ions by commercially available zero valent iron (ZVI), ZVI/Cu polyscale particles with high activation are synthesized and exhibit significant removal efficiency for reactive black (RB) dye. The ZVI/Cu polyscale particles could maintain a good performance for RB removal at a wide pH ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23152
更新日期:2019-02-01 00:00:00
abstract::Most of the molecular and experimental studies on the floor plate (FP) have been performed on the FP region extending along the spinal cord. However, little is known about the hindbrain FP. The FP undergoes regional and temporal changes throughout development, but information with respect to the ultrastructural correl...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/1097-0029(20010301)52:5<615::AID-JEMT1045>
更新日期:2001-03-01 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
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0029(19960501)34:1<71::AID-JEMT
更新日期:1996-05-01 00:00:00
abstract::This present study is the first report on the detailed foliar epidermal anatomy and micromorphology of seeds of five species of Vitaceae from Pakistan using light microscopy (LM) and scanning electron microscopy (SEM). The studied species occur at various localities particularly higher altitude. Qualitative and quanti...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23102
更新日期:2019-04-01 00:00:00
abstract::Human adipose derived stem cells have shown chondrogenic differentiation potential in cartilage tissue engineering in combination with biomimetic materials. In this study, the chondrogenic potential of a porous gelatin based scaffold genipin (GNP) crosslinked was investigated in human mesenchymal stem cells obtained f...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22417
更新日期:2014-11-01 00:00:00
abstract::The histomicroscopy and normal anatomy of the major body organ systems were investigated in the adult killifish, Aphanius hormuzensis using histological examination, X-ray imaging, double staining, light microscopy and scanning electron microscopy (SEM). Based on the histomicroscopic observations, the kidney, liver an...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23190
更新日期:2019-04-01 00:00:00
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journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.1166
更新日期:2001-11-01 00:00:00
abstract::Macro and microdissection methods, conventional histology and immunohistochemical procedures were used to investigate the nasal cavity and turbinate complex in fetal and adult sheep, with special attention to the ethmoturbinates, the vestibular mucosa, and the septal mucosa posterior to the vomeronasal organ. The ecto...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22436
更新日期:2014-12-01 00:00:00
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journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20528
更新日期:2008-02-01 00:00:00
abstract::This study compared several irrigation protocols and application systems for sealer penetration into dentinal tubules. Single-rooted-human teeth were divided into 5 experimental groups (n = 15) and a control group (n = 5), according to final irrigation protocols: standard needle irrigation (SNI); Vibringe; Vibringe + ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22944
更新日期:2017-12-01 00:00:00
abstract::The mechanism of the candidacidal activity of histatins 3 and 5 (Hst) is still a matter of debate. Previous studies have indicated that Hst induce cell permeabilization, generation of reactive oxygen species (ROS) by mitochondria, inhibition of the respiratory chain, and energy-dependent cytotoxic release of ATP. On t...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20161
更新日期:2005-04-01 00:00:00
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
pub_type: 杂志文章
doi:10.1002/jemt.20073
更新日期:2004-06-01 00:00:00
abstract::Various labial and lingual orthodontic appliances with aesthetic materials have been developed due to an increased demand in aesthetic orthodontic treatment. However, there are few reports regarding the morphology of lingual orthodontic appliances. Therefore, this study evaluates the roughness of slot surfaces of vari...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.22775
更新日期:2016-12-01 00:00:00
abstract::On continuing our studies on head and neck neoplasia, specimens from salivary gland tumors have been explored by using infrared microimaging spectroscopy to discern healthy from neoplastic tissues. Samples with Warthin tumor, epithelial displasia, marginal B-cell lymphoma, low-grade adenocarcinoma, and adenoid cystic ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.20644
更新日期:2009-02-01 00:00:00
abstract::Aluminum-lithium alloy is regarded as the most promising light material in the aircraft and aerospace industries. For the production of complex and high-precision parts, the hot forming with synchronous quenching (HFSQ) process has become an effective and attractive forming method. In order to achieve the performance ...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/jemt.23593
更新日期:2021-02-01 00:00:00
abstract::The subcommissural organ (SCO) is a brain circumventricular organ formed by ependymal and hypendymal secretory cells. It secretes glycoproteins into the cerebrospinal fluid of the third ventricle where they condense into a thread-like structure known as Reissner's fiber (RF). The present study was designed to investig...
journal_title:Microscopy research and technique
pub_type: 杂志文章
doi:10.1002/1097-0029(20010301)52:5<496::AID-JEMT1035>
更新日期:2001-03-01 00:00:00
abstract::Ribbon synapses differ from conventional chemical synapses in that they contain, within the cloud of synaptic vesicles (SV's), a specialized synaptic body, most often termed synaptic ribbon (SR). This body assumes various forms. Reconstructions reveal that what appear as rod- or ribbon-like profiles in sections are in...
journal_title:Microscopy research and technique
pub_type: 杂志文章,评审
doi:10.1002/(SICI)1097-0029(19961215)35:6<472::AID-JEM
更新日期:1996-12-15 00:00:00