Abstract:
:Rapid cooling of small samples is necessary both to cryofixation for electron microscopy and to vitrification for cryopreservation. Several effects on the cooling rates of small samples quenched into liquid nitrogen were studied, including the diameter of samples, the subcooling of liquid nitrogen, the quenching speed, and the quenching distance. The heat flux is 1.4 x 10(6) W/m2; the cooling rate is also up to 8200 K/s at the CHF point of boiling curves for sphere of diameter 0.287 mm quenching into subcooled liquid nitrogen. It is also found that if the time of sample moving inside the liquid nitrogen is not longer than the time required for forming stable vapor in the liquid, the quenching boiling heat transfer is not influenced by the quenching speed. Several equation for calculating heat flux of samples are also presented.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Cao Q,Hua TCdoi
10.1111/j.1749-6632.1998.tb10160.xsubject
Has Abstractpub_date
1998-09-11 00:00:00pages
262-9eissn
0077-8923issn
1749-6632journal_volume
858pub_type
杂志文章abstract::Starling's law and the end-systolic pressure-volume relationship (ESPVR) reflect the effect of sarcomere length (SL) on the development of stress (sigma) and shortening by myocytes in the uniform ventricle. We show here that tetanic contractions of rat cardiac trabeculae exhibit a sigma-SL relationship at saturating [...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1420.010
更新日期:2008-03-01 00:00:00
abstract::Although drugs of abuse have different chemical structures and interact with different protein targets, all appear to usurp common neuronal systems that regulate reward and motivation. Addiction is a complex disease that is thought to involve drug-induced changes in synaptic plasticity due to alterations in cell signa...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1441.022
更新日期:2008-10-01 00:00:00
abstract::alpha-Melanocyte stimulating hormone (alpha-MSH) modulates all forms of inflammation by acting on peripheral inflammatory cells, glial inflammatory cells, and on CNS receptors that activate descending antiinflammatory neural pathways. The multiple actions of this ancient peptide suggest that there is no singular bioch...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1999.tb08674.x
更新日期:1999-10-20 00:00:00
abstract::The transfer of nutrients from the mother through the chorioallantoic placenta meets the nutritional needs of the embryo during human prenatal development. Although all amniotes start with a similar "tool kit" of extraembryonic tissues, an enormous diversity of extraembryonic tissue formation has evolved to accommodat...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2012.06726.x
更新日期:2012-10-01 00:00:00
abstract::The epidemiologic features are described of cases of human monocytic ehrlichiosis and human granulocytic anaplasmosis in the United States. ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1374.017
更新日期:2006-10-01 00:00:00
abstract::Adult musicians show superior neural sound discrimination when compared to nonmusicians. However, it is unclear whether these group differences reflect the effects of experience or preexisting neural enhancement in individuals who seek out musical training. Tracking how brain function matures over time in musically tr...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12656
更新日期:2015-03-01 00:00:00
abstract::In summary, immediate hypersensitivity reactions to luminal antigens occur in the intestine and result in pathophysiology including increased permeability and ion secretion. The mechanism involves activation of mast cells with neural amplification (FIG. 5). Released mediators/neurotransmitters may act independently or...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1992.tb39771.x
更新日期:1992-01-01 00:00:00
abstract::The sense of smell shows a diminution with age as measured by the University of Pennsylvania Smell Identification Test (UPSIT). To ascertain whether the volumes of the olfactory bulbs and tracts (OBTs) and the temporal lobes (TL) declined in parallel to smell function, we examined 36 individuals from ages 22 to 78 who...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1998.tb10624.x
更新日期:1998-11-30 00:00:00
abstract::In the intestine, a single layer of epithelial cells effectively separates potentially harmful luminal content from the underlying tissue. The importance of an intact mucosal layer is highlighted by pathological disorders of the gut such as inflammatory bowel disease, in which disruption of the epithelial barrier lead...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2009.04025.x
更新日期:2009-05-01 00:00:00
abstract::A linear stability analysis is presented for variable-viscosity miscible fluids in an unstable configuration; that is, a heavier fluid placed above a lighter one in a vertically oriented capillary tube. The initial interface thickness is treated as a parameter to the problem. The analysis is based on the three-dimensi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1324.032
更新日期:2004-11-01 00:00:00
abstract::The arterial baroreflex has two important functions. First, the arterial baroreflex is a negative feedback reflex that regulates arterial pressure around a preset value called a set or operating point. Second, the arterial baroreflex also establishes the prevailing systemic arterial pressure when the operating point i...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.2001.tb03688.x
更新日期:2001-06-01 00:00:00
abstract::Studies of musical abilities in dementia have for the most part been rather general assessments of abilities, for instance, assessing retention of music learned premorbidly. Here, we studied patients with dementias with contrasting cognitive profiles to explore specific aspects of music cognition under challenge. Pati...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/nyas.12616
更新日期:2015-03-01 00:00:00
abstract::In the present study, we examined the potential impact of a T-to-C substitution at nucleotide 1519 of the GABA(A)alpha6 receptor subunit gene (GABRA6) on obesity and obesity-related phenotypes as well as circulating hormones, including salivary cortisol, in 284 unrelated Swedish men born in 1944. The subjects were gen...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2002.tb04318.x
更新日期:2002-06-01 00:00:00
abstract::Our previous studies of anti-DNA antibodies in SLE have demonstrated a preferential use of V kappa I and V lambda II gene families to encode light chains of antibodies that express the anti-DNA-associated 3I and 8.12 idiotypes, respectively. In this study, we employed PCR to obtain V kappa I and V lambda II germline g...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:
更新日期:1995-09-29 00:00:00
abstract::Data have been presented to document that the human newborn is a conditionable organism. Babies in the first days of life possess sensitivity to stimulation in all sensory modalities, an unconditioned repertoire of responses to some of these sensory stimuli, and a capacity for associating simultaneously presented stim...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1990.tb48894.x
更新日期:1990-01-01 00:00:00
abstract::Currently, it is known that several chemical agents used or generated by the oil industry are classified as mutagens and/or carcinogens. Among these we have gasoline, diesel, butane gas, styrene, benzene, chloroform, and others. Studies have verified that these chemicals have effects in fertility (abortions, sterility...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1454.013
更新日期:2008-10-01 00:00:00
abstract::One of the most studied effects of verbal working memory (WM) is the influence of the length of the words that compose the list to be remembered. This work aims to investigate the nature of musical WM by replicating the word length effect in the musical domain. Length and rate of presentation were manipulated in a rec...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2009.04787.x
更新日期:2009-07-01 00:00:00
abstract::Rapamycin (RAPA), an inhibitor of mTORC signaling, has been shown to extend life span in mice and other organisms. Recently, animal and human studies have suggested that inhibition of mTORC signaling can alleviate or prevent the development of cardiomyopathy. In view of this, we used a murine model of type 2 diabetes ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/nyas.13557
更新日期:2018-04-01 00:00:00
abstract::A short review of current concepts concerning the origin and kinetics of monocytes and macrophages is given, and the humoral regulation of monocyte production by FIM, a factor synthesized and secreted by macrophages, is discussed. Genetic control of the responsiveness of monocyte precursors to FIM and that of the phag...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1986.tb18476.x
更新日期:1986-01-01 00:00:00
abstract::The signal peptidases from both chicken oviduct and dog pancreas microsomes have been detected by a post-translational assay and, in the case of dog microsomes, by a cotranslational assay. This proteolytic activity is not sensitive to a variety of conventional protease inhibitors under the conditions used in these ass...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1980.tb47251.x
更新日期:1980-01-01 00:00:00
abstract::B-1 cells represent a subpopulation of B cells that has been extensively studied in mice and shown to spontaneously generate natural antibody that provides antimicrobial protection and helps dispose of cellular debris. Mouse B-1 cells originate from distinct progenitors and express additional immune properties that in...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12790
更新日期:2015-12-01 00:00:00
abstract::Evidence from experimental animal studies show that sex hormones influence the glucocorticoid response to a variety of inflammatory and noninflammatory stimuli. In this study we assessed gender differences in the response of ACTH and cortisol in normal young male and female humans following intravenous infusion of hum...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2002.tb04203.x
更新日期:2002-06-01 00:00:00
abstract::The preventive effects of the phytoalexin trans-resveratrol toward cancer have been largely described at the cellular and molecular levels in both in vivo and in vitro models; however, its primary targets are still poorly identified. In this review, we show the crucial role of cell membrane microdomains, that is, lipi...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/nyas.12177
更新日期:2013-07-01 00:00:00
abstract::Emerging evidence suggests that individuals who receive morphine while hospitalized demonstrate a decrease in symptoms of posttraumatic stress disorder (PTSD). However, the mechanisms of effects are not yet well understood. The goal of the current study was to examine three possible mediators for this effect. Sixty-on...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1196/annals.1364.004
更新日期:2006-07-01 00:00:00
abstract::The Sex combs reduced gene of the Antennapedia complex specifics the identities of the anterior thoracic and posterior head segments, including the primordium of the larval salivary gland. The Sex combs reduced transcription unit spans over 30 kb of genomic DNA, with another 40 kb of upstream cis-regulatory sequences....
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1111/j.1749-6632.1998.tb09628.x
更新日期:1998-04-15 00:00:00
abstract::We have earlier shown that monkeys reared with daily alternating monocular occlusion for the first few months of life develop large horizontal strabismus, A/V patterns, dissociated vertical deviation (DVD), and dissociated horizontal deviation (DHD). Here, we present results from neurophysiological experiments that sh...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.2011.06146.x
更新日期:2011-09-01 00:00:00
abstract::Most of the plasma suppressive activity was associated with alpha 2M in both normal subjects and cancer patients. alpha 2M binding to physiological levels of proteases was associated with an increase in the ability to suppress lymphocyte reactivity in the TEEM test. alpha 2M binding to proteases released a peptide tha...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1983.tb18131.x
更新日期:1983-01-01 00:00:00
abstract::Some in vitro functions of purified T and B cells from PPD- and Candida albicans-negative sarcoidosis patients were analyzed. It appears that in those patients there is: 1) A decrease in the absolute number of T lymphocytes and an increase in the number of B cells; 2) a rather normal response of T lymphocytes to PHA a...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1976.tb47018.x
更新日期:1976-01-01 00:00:00
abstract::Osteoclasts are cells of monocyte-macrophage origin that degrade bone matrix. Receptor activator of NF-kappaB ligand (RANKL) induces osteoclast formation in the presence of macrophage-colony-stimulating factor (M-CSF) and costimulatory signals. RANKL induces activation of the TNF receptor-associated factor 6 (TRAF6) a...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章,评审
doi:10.1196/annals.1402.071
更新日期:2007-11-01 00:00:00
abstract::The existence of a covalent intermediate in topoisomerase I catalysis allows uncoupling of the cleavage and ligation half-reactions on partially single-stranded DNA substrates containing a highly preferred interaction site. Using this model DNA substrate system we have demonstrated that the cleavage reaction requires ...
journal_title:Annals of the New York Academy of Sciences
pub_type: 杂志文章
doi:10.1111/j.1749-6632.1996.tb26376.x
更新日期:1996-12-13 00:00:00