Histochemical and Histospectrophotometric Study of PAS-Positive Material in the Hypothalamo-Hypophyseal Neurosecretory Pathway

1978 ◽  
pp. 261-264
Author(s):  
D. Parent ◽  
V. Vilter ◽  
C. Da Lage
Keyword(s):  
Positive Material

No aging bias favoring memory for positive material: Evidence from a heterogeneity-homogeneity list paradigm using emotionally toned words.

2005 ◽  
Vol 20 (4) ◽  
pp. 579-588 ◽  
Author(s):  
Daniel Grühn ◽  
Jacqui Smith ◽  
Paul B. Baltes
Keyword(s):  
Positive Material ◽  
Material Evidence

‘Leaving a record of their coming’

2021 ◽  
Vol 14 (3) ◽  
pp. 279-296
Author(s):  
Bridgitte Barclay
Keyword(s):  
Atomic Age ◽  
Positive Material ◽  
Past Injustices ◽  
Colonial Science

Creature from the Black Lagoon (Arnold US 1954), perhaps the quintessential and most enduring atomic-age creature feature, is a rich text for ecocritical analysis. Not only does the film heavily emphasise extinction and evolution in its narration and plot line, but the film is full of tensions that both calcify problematic Anthropocenic narratives and erode them. The film offers us a way of critiquing Anthropocenic histories and ongoing narratives without erasing racial and colonial injustices. It also offers us a way to imagine other stories - other ways of writing on our world - that engage material entanglements, disorient colonial and anthropocentric perspectives and create empathy. Recognising the film’s rocky Anthropocenic and extinction narratives enables a more fluid approach. Reading through water, emphasising evolutionary entanglements, brings into high relief past injustices against humans and nonhumans, and it engages a palimpsest effect, where an awareness of our muddled materiality helps us write over hierarchical pasts. Framing the film ecocritically by reading extinction and evolution emphasises the tensions of Anthropocenic violence (through colonial science and Anthropocenic erasures) and of positive material entanglements (through empathy and disorientation).

scholarly journals 3D flower-like molybdenum disulfide modified graphite felt as a positive material for vanadium redox flow batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (29) ◽  
pp. 17235-17246
Author(s):  
Lei Wang ◽  
Shuangyu Li ◽  
Dan Li ◽  
Qinhao Xiao ◽  
Wenheng Jing
Keyword(s):  
Ion Transport ◽  
Molybdenum Disulfide ◽  
Open Flower ◽  
Graphite Felt ◽  
Redox Flow Batteries ◽  
Positive Material ◽  
Flow Batteries ◽  
Vanadium Redox ◽  
Vanadium Ion

The open flower-like structure facilitates vanadium ion transport. The capacity and efficiency of a battery using MoS2/GF are dramatically increased.

Reversible Anion Insertion in Molecular Phenothiazine‐Based Redox‐Active Positive Material for Organic Ion Batteries

ChemSusChem ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2364-2370
Author(s):  
Murugesan Rajesh ◽  
Franck Dolhem ◽  
Carine Davoisne ◽  
Matthieu Becuwe
Keyword(s):  
Positive Material ◽  
Redox Active

Two-dimensional CoFe hydroxides nanostructure as positive material for asymmetric supercapacitor

2020 ◽  
Vol 746 ◽  
pp. 137282 ◽  
Author(s):  
Xiaoqiao Fang ◽  
Sancan Han ◽  
Doukou Liu ◽  
Yufang Zhu
Keyword(s):  
Asymmetric Supercapacitor ◽  
Two Dimensional ◽  
Positive Material

scholarly journals Characterization of amino acids and low-molecular-weight peptides bound to cytoplasmic granules from the posterior pituitary

1970 ◽  
Vol 48 (4) ◽  
pp. 455-462 ◽  
Author(s):  
Seon Shin ◽  
Frank LaBella ◽  
Gary Queen
Keyword(s):  
Amino Acids ◽  
Gel Filtration ◽  
Cation Exchange Resin ◽  
Exchange Chromatography ◽  
Posterior Pituitary ◽  
Total Acid ◽  
Cytoplasmic Granules ◽  
Molecular Weights ◽  
Positive Material ◽  
Fraction I

A number of peptides and amino acids, representing 30–40% of the total acid-extractable, ninhydrin-positive material of the tissue, were associated with cytoplasmic granules (sedimenting at 3 000 000 g-min after preliminary removal of "nuclei and debris") isolated from bovine posterior pituitary glands. Acetic acid (0.2 N) extracts of a purified neurosecretory granule fraction showed only slight differences in the pattern of peptides and amino acids from extracts of the total cell particulate fraction. Gel filtration of extracts on Sephadex G-25 yielded three major fractions: fraction I consisting of peptide material of molecular weights > 4000, fraction II of molecular weights averaging about 3000, and fraction III of molecular weights < 2000. Fraction III was further resolved by anion-exchange chromatography into 12 subfractions. Vasopressin and oxytocin were contained in subfractions 2 and 3, respectively. Each of these subfractions was in turn chromatographed on a cation-exchange resin and resolved into a total for fraction III of 22 major components: lysine, arginine, phenylalanine, ammonia, and 18 peptides. Three of the peptides contained only aspartic and glutamic acids in the ratios 8:1, 5:1, and 4:1. The sequences of four dipeptides were ascertained. Another peptide was not retarded by Dowex 50 and yielded glutamic acid upon acid hydrolysis. Still another peptide yielded tyrosine plus an unknown ninhydrin-positive component after hydrolysis. The amino acid compositions were determined for nine other peptides containing three to nine residues. Additional peptides in fraction III were detected in lesser or trace amounts. Isolated granule fractions from both bovine posterior pituitary and rat liver were dialyzed against isotonic sucrose or distilled water. The rate of loss of ninhydrin-positive material from the sample dialyzed against water indicated that a large proportion of the "free" amino acids and peptides of these tissues were contained within intracellular organelles.

Characterization and electrochemical properties of Cx(VOF3)F as positive material for primary lithium batteries

1996 ◽  
Vol 62 (1) ◽  
pp. 107-112 ◽  
Author(s):  
H. Groult ◽  
T. Nakajima ◽  
N. Kumagai ◽  
D. Devilliers
Keyword(s):  
Electrochemical Properties ◽  
Lithium Batteries ◽  
Positive Material

scholarly journals PERIODIC ACID SCHIFF-POSITIVE MATERIAL IN HAMSTER PREIMPLANTATION EMBRYOS

Reproduction ◽  
1972 ◽  
Vol 30 (1) ◽  
pp. 173-175 ◽  
Author(s):  
H. D. McREYNOLDS ◽  
R. HADEK
Keyword(s):  
Periodic Acid ◽  
Preimplantation Embryos ◽  
Periodic Acid Schiff ◽  
Positive Material
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