A std. bakers' grade wheat flour contg. 11.5% protein was mixed with various concns. of Na stearoyl-2-lactylate (SSL) [25383-99-7], Ca stearoyl-2-lactylate [5793-94-2], isostearoyl-2-lactylate [76021-79-9], SSL-Span 60 [1338-41-6] (3-7:7-3), SSL-Polysorbate 60 [9005-67-8] (1-3:1), or a mixt. of monoglyceride stearate [31566-31-1] and diglyceride stearate [1323-83-7], and farinog., extensog., and baking quality measurements were made. Best overall results were obtained with 0.5% SSL, Ca stearoyl-2-lactylate, or SSL-Span 60 (7:3), which induced a 10-15% increase in loaf vol. as compared to controls without emulsifiers. Flour with 0.5% mono- and diglyceride stearate added produced a relatively poor quality product. [on SciFinder(R)]
The crystal size and the length to width ratio of nitrofurantoin (I) [67-20-9] can be controlled using an appropriate mixt. of solvents and suitable crystn. conditions. DMF formed undesirable complexes with I while with HCO2H [64-18-6] no crystal structure modification or complexation was detected. The length (y) to width (x) ratio of I varies from 2.5 to 1.5 when crystd. from pure HCO2H or in a mixt. with H2O or EtOH [64-17-5]. The y/x values corresponded to the solvent interactions and supersatn. The crystal growth regularity is ascribed to the solvent power and thus when more regular crystals will ppt. bioavailability and solubilization of the drug will increase. Best results were obtained when a mixt. of HCO2H-EtOH (2:1) soln. was used as the crystn. media yielding large tabular crystals. [on SciFinder(R)]
A new method is described for following the inhibitory effect in artificial urine of polymeric dicarboxylic amino acids and other polyanionic derivs. on Ca oxalate crystn. The technique is based on using a Ca-specific electrode to measure Ca++ ion activity in soln. to assess the formation of Ca oxalate ppt. The retardation effect of poly-L-glutamic acid Na salt and poly-L-aspartic acid Na salt occurred in a 5-100 ppm concn. range. Blocking of the free carboxylic groups on the polymers eliminated the retardation effect. The retardation appears to be an inhibition of seed crystal growth rate. Normal urine retarded the pptn. but pathol. urine did not. [on SciFinder(R)]
B Arad, Eliezer, S , Gazit, Y , Jackel, S , Karmi, Y , Loebenstein, HM , ו Zigler, A . 1980.
“Laser Light Absorption In Long-Pulse High-Irradiance Experiments”. Applied Physics Letters, 37, Pp. 774–776.
Human polymorphonuclear leukocytes (PMN) chemotaxis was tested during exposure to leukocyte and platelet extracts, a variety of polyelectrolytes, inflammatory exudates, and bacterial products. The chemoattractants employed were either zymosan-activated serum or supernatant from autolyzed Staphylococcus aureus. Chemotaxis to both chemoattractants was markedly inhibited by leukocyte and platelet extracts; inflammatory exudates; anionic polyelectrolytes, DNA, hyaluronic acid, liquoid; and by cationic polyelectrolytes, histone, protamine base, protamine sulfate, and myeloperoxidase. Inhibition was also found with elastase, collagenase, pepstatin, and epsilon-amino-caproic acid. Bacterial products, such as lipoteichoic acid and lipopolysaccharides, and extracts of human dental plaque inhibited chemotaxis. No inhibition of chemotaxis was observed with heparin (< 10 micrograms/ml), chondroitin sulfate, phosphatidylethanolamine and phospatidylserine. Indeed, chondroitin sulfate markedly enhanced chemotaxis and antagonized the inhibitory effect of leukocyte or platelet extract. None of the agents employed was toxic to PMN as judged by trypan blue exclusion. These observations suggest that cationic polyelectrolytes and inflammatory exudates influence PMN surfaces, modifying interaction with chemoattractants. Assessment of the role of PMN chemotaxis in host defense against microbial invaders requires evaluation of the response in the presence of agents likely to be present in inflamed tissues.
M Klapisch, Bar-Shalom, A , Mandelbaum, P , Schwob, JL , Zigler, A , Zmora, H , ו Jackel, S . 1980.
“Nickel-Like Spectra Of Tm Xlii And Yb Xliii From Laser Produced Plasma”. Physics Letters A, 79, Pp. 67–70.
A Zigler, Zmora, H , Spector, N , Klapisch, M , Schwob, JL , ו Bar-Shalom, A . 1980.
“Nickel-Like Spectrum Of Platinum Emitted From A Laser-Produced Plasma”. Physics Letters A, 75, Pp. 343–344.
Cholesterol was crystd. under various conditions from a range of solvents, and the effects of the solvents on the crystal structure were studied. The phase transitions and the latent heat, $Δ$Hp, were measured and were found to vary from 0.18 kcal mole-1 (for CCl4) to 1.1 kcal mole-1 (for acetonitrile). It seems possible that the polymorphic transitions of cholesterol at 37° may be divided into several subtransitions, each one corresponding to a slight configurational change that can be attributed to a possible flip-over of the aliph. chain of the cholesterol. [on SciFinder(R)]
The excavation of Tell Qasile, situated on a bank of the River Yarkon in north Tel Aviv, was resumed in 1971-1974. Area C proved to be the sacred area of the Philistine town, offering a unique opportunity to excavate a Philistine sanctuary that underwent a series of architectural changes in Strata XII-VII of the late 12th-late 10th centuries BCE. A thorough description of the architectural remains, with numerous plans and sections, is followed by a comparative study of temples in Syria-Palestine, Cyprus, and the Aegean. The rich assemblage of exotic cult objects, including anthropomorphic and zoomorphic vessels, masks, stands, kernoi and figurines, is presented in detail and their cultural connections are studied. Qedem 20 (1985) treats the pottery and small finds from Tell Qasile and discusses the chronological, cultural, and historical conclusions to be drawn from the excavations at the site.
S Jackel, Loebenstein, HM , Zigler, A , Zmora, H , ו Zweigenbaum, S . 1980.
“A Q-Switched Oscillator For Stable Time-Tunable Operation In The Nanosecond Regime”. Journal Of Physics E: Scientific Instruments, 13, Pp. 995.
J. Krawiec, Schwartz, B. , Quastel, M. R. , Marks, J. , Odes, H.S. , ו Lamprecht, S.A.. 1980.
“Release In Vitro By Gastrointestinal Tissues Of An Inhibitor Of Canine Antral Gastrin Secretion”. Gastroenterology, 78, 2, Pp. 333-8. .
Publisher's Version Polycarboxylic amino acids were examd. as possible retarding agents in the pptn. of urinary Ca oxalate [563-72-4] calculi. The effect was obsd. by continuous detn. of the concn. of Ca ions in a mimic urine soln. Both Na polyglutamate [26247-79-0] and Na polyaspartate [34345-47-6], when used in concns. of 5-100 ppm, significantly retarded Ca oxalate pptn. [on SciFinder(R)]
