13-Vertex Carbacobaltaboranes: Synthesis and Molecular Structures of the 4,1,6-, 4,1,8- and 4,1,12-Isomers of Cp*CoC2B10H12

2002 ◽  
Vol 67 (7) ◽  
pp. 991-1006 ◽  
Author(s):  
Anthony Burke ◽  
Ruaraidh McIntosh ◽  
David Ellis ◽  
Georgina M. Rosair ◽  
Alan J. Welch

Attempted crystallographic studies of the known compounds 4-Cp-4,1,8-closo-CoC2B10H12 and 4-Cp-4,1,12-closo-CoC2B10H12 were frustrated because of disorder which was impossible satisfactorily to model. Thus the family of Cp* compounds 4-Cp*-4,1,6-closo-CoC2B10H12, 4-Cp*-4,1,8-closo-CoC2B10H12 and 4-Cp*-4,1,12-closo-CoC2B10H12 were prepared. The 11B NMR spectroscopic properties of these compounds are closely similar to those of their Cp analogues. All three compounds were studied crystallographically. The 4,1,8- and 4,1,12-species are isomorphous and partially disordered, however the disorder was successfully modelled and structural analyses of 4,1,8- and 4,1,12-MC2B10 compounds are reported for the first time. A new technique for distinguishing between cage C and B atoms in crystallographic study of (hetero)carboranes is reported. The 12-vertex compound 3-Cp*-3,1,2-closo-CoC2B9H11 is formed as a minor co-product along with 4-Cp*-4,1,6-closo-CoC2B10H12 and is believed to result from partial degradation of the latter. The 12-vertex species has also been subjected to crystallographic analysis.

Cephalalgia ◽  
1995 ◽  
Vol 15 (3) ◽  
pp. 205-210 ◽  
Author(s):  
L Bendtsen ◽  
R Jensen ◽  
NK Jensen ◽  
J Olesen

The objective of the present study was to investigate whether the reliability of tenderness evaluation can be increased by using a new technique called “pressure-controlled palpation” (pcp). The technique has been made possible by a newly invented piece of equipment called a palpometer, with which a pressure-sensitive plastic film attached to the index finger records the pressure exerted. In 15 patients with chronic tension-type headache and in 15 healthy volunteers, 2 investigators studied myofascial tenderness using conventional palpation and pressure-controlled palpation. Tenderness was scored on a 4–point scale in each of the examined pericranial regions. The sum of tenderness scores recorded by two observers using conventional palpation differed significantly ( p = 0.0003), while results did not differ between observers using pressure-controlled palpation ( p = 0.89). During palpation with seven different pressure intensities a positive and linear relation between pressure and pain intensity was found ( p = 0.00006). Pain intensity reported by the subjects correlated highly with tenderness scored by the observer (rs = 0.95, p < 0.0001). These results demonstrate for the first time that tenderness scores can be compared between observers if palpation pressure is controlled. Pressure-controlled palpation represents a major improvement on current palpation techniques and should be standard in future research on myofascial pain disorders.


Author(s):  
Mostafa Maged Ali

Post-partum hemorrhage is still a headache to all obstetricians around the whole world. Every obstetrician exerts his own full effort to control bleeding which can occur post-partum by applying all maneuvers to preserve the fertility and the uterus for the patient. We demonstrate a new technique (Mostafa Maged) technique to control and prevent post-partum hemorrhage. It is so simple maneuver and easy to be applied within short period of time. Satisfactory hemostasis can be assessed after application. The aim of this technique is to see the Success in Controlling and prevention of the bleeding from placenta previa cases from lower uterine segment. The average duration of this new technique is (5-7) minutes. The results have shown that the hysterectomy done to one patient with new technique (1/13) (7.6%) cases because of the uncontrollable bleeding, blood was creeping down from the flipped sutured lower uterine segment. All of patients are introduced to the operating room as first-time cesarean section. One patient (7.6%) out of thirteen patients were tachycardiac post-operatively due to the more loss of blood as the new (Mostafa Maged) technique took a long time in these two patients (8 minutes). The tests of success were expected if hemostasis is done by the bimanual compression at first place.


1944 ◽  
Vol 4 (13) ◽  
pp. 746-770

Sir David Prain’s parents were David Prain, a native of Inchture in eastern Perthshire, and Mary Thomson, of Alford, in the Don valley, Aberdeenshire. He was the elder of two children by this marriage, born 11 July 1857; the second son, William, was born 23 December 1861. The family preserved a tradition that their surname had been brought into Scotland by three brothers, Huguenot weavers; but papers in Sir David’s handwriting, which Mr William Prain has kindly allowed the writer to see, show that this tradition is not quite accurate: importation of the surname by weavers is accepted, either by one with three children who followed their father’s calling, or by these three when already grown up; but, as the surname was already in Scotland nearly thirty years before the Revocation of the Edict of Nantes, the immigrants would not be Huguenots; and, moreover, Huguenot weavers did not settle at any time in the part of Perthshire whence the surname Prain radiated. The weavers could have been, and probably were, fugitives via Holland from religious persecution at the time of the Thirty Years War (1618-1648). Dundee had its weavers from more than a century earlier; and the newcomers were welcome among them because they brought as a new technique the weaving of a coarse linen in demand on the plantations in America; but circumstances scattered them through the villages; and it is from the slopes of the Sidlaw Hills that the first records of the name Prain come. The family papers from which the above data are taken, show another circumstance of greater interest than the origin of the name, hidden in the maiden names of the wives of these Prains, names which demonstrate how completely the Prains became absorbed in the Lowland Scotch population of the Carse of Gowrie and the hills rising over it. One line of the family appears in parish records from Fife, but died out. The line that interests us was always in eastern Perthshire up to a migration by Sir David’s father northwards to Fettercairn in Kincardineshire.


1993 ◽  
Vol 47 (6) ◽  
pp. 710-714 ◽  
Author(s):  
J. W. Hahn ◽  
S. N. Park ◽  
E. S. Lee ◽  
C. Rhee ◽  
K. T. Kang ◽  
...  

A new technique for measuring the concentration of species from the modulation dip of the nonresonant background of broad-band CARS spectra has been proposed. To reduce the mode noise superimposed on the CARS spectra, we used a modeless laser generating amplified spontaneous emission as the Stokes beam of the broad-band CARS. The modulation dip induced by a minor species, CO in Ar, was numerically calculated and fitted as a function of CO concentration and temperature. We applied this technique in measuring CO concentration in a static cell and also the profile of CO concentration in a CH4/air premixed flame of a counterflow burner.


Zootaxa ◽  
2019 ◽  
Vol 4711 (3) ◽  
pp. 401-445
Author(s):  
HASSAN A. DAWAH ◽  
SYED K. AHMAD ◽  
MOHAMMED A. ABDULLAH ◽  
TADEUSZ ZATWARNICKI

Despite the species richness of Ephydridae world-wide (2000 species) and its prominent environmental roles as a minor pest and as a food for wildlife, only 13 species have been recorded from Saudi Arabia. Between 2012 and 2016, a biodiversity study of Diptera was conducted at Jazan, Asir, and Najran in south-western Saudi Arabia, at 22 sites, was performed mainly using Malaise traps and sweep nets. In this study, 43 known species of Ephydridae were identified, 37 of them for the first time from southwestern Saudi Arabia and 16 from Arabian Peninsula. This brings the total number of Ephydridae species in Saudi Arabia to 49 (including previous records). There were a further four species, which could not be identified authoritatively to species level. A list of all species of Ephydridae recorded from Saudi Arabia is appended. Images of thirty-two species are presented. The species recorded in this study are more Palaearctic in origin as compared to other regions. Biological information (where known) and world-wide distribution are included. This study has added new records to the Saudi Arabian checklist of Ephydridae, which will provide the basis for systematic studies and fauna analyses of future work on the family. The need for further field and laboratory work and surveillance is highlighted. 


2021 ◽  
Vol 13 (2021/1) ◽  
Author(s):  
Alexa Péter

Khon Konchog Gyalpo, the main disciple of Drogmi, founded a monastery at Sakya. It was this monastery that gave its name to the whole monastic order of Drogmi. Konchog was a member of the Khon clan, the family that went on to produce the successive abbots or chief lamas of Sakya who have continued as the heads of this order ever since. The succession of abbots within the family was established on the father-to-son or uncle-to-nephew pattern. In the instance of an abbot remaining celibate, it was his brother or a close relative who continued the family line and oversaw the monastery’s worldly affairs; when the abbot died, he was succeeded by one of his nephews. The Sakyas reached the summit of political power when Sakya Pandita and Phagpa won the confidence and favour of Mongolian khans. The Sakyas were appointed as regents of Tibet, whereby Tibet became subject to a single political authority for the first time after the collapse of the monarchy. The aim of this paper is to show the development of the Khon clan, how a minor aristocratic family was transformed into a significant power in Tibet in both historical and religious aspects, through the efforts of some prominent members of Khon family.


1986 ◽  
Vol 90 ◽  
Author(s):  
R. N. Bicknell ◽  
N. C. Giles ◽  
J. F. Schetzina

ABSTRACTWe report the successful substitutional doping of CdTe epilayers grown by a new technique: photoassisted molecular beam epitaxy, in which the substrate is illuminated during the film deposition process. This new technique was found to produce dramatic changes in the electrical transport properties of the epilayers. In particular, highly conducting n-type and p-type CdTe films have been grown using In and Sb as n-type and p-type dopants,respectively. Photoassisted MBE has also recently been employed to produce for the first time highly conducting CdMnTe epilayers and Cd 1-xMnxTe-CdTe superlattices.


1983 ◽  
Vol 143 (4) ◽  
pp. 332-337 ◽  
Author(s):  
G. S. Brindley

SummaryIntracavernosal injection of phenoxybenzamine, in a dose too small to have significant general effects, caused full erection lasting between half an hour and 30 hours in 3 of 4 potent men (2 normal, 2 anorgasmic) and in 6 of 11 impotent men. In the remaining potent man and 3 of the remaining impotent it caused the penis to be stiff enough for intromission. Six of the eleven impotent men have had sexual intercourse, for the first time for months or years, while under the drug.The practical implications of this new discovery are discussed.


PEDIATRICS ◽  
1980 ◽  
Vol 65 (3) ◽  
pp. 680-681
Author(s):  
S. Robert Lewis

I offer my recent observation on a new technique for following the passage of a coin through the digestive tract. Several months ago I was called by a distraught mother who informed me that her 7-year-old daughter had just swallowed a quarter. X-ray did reveal the coin located in the stomach. I reassured the family informing them that it would pass through in the next few days. After about two weeks of stool gazing and nonpassage the child was x-rayed again, and to my dismay I noted that the coin had not budged and less reassuringly sent them home to await passage of the pesky coin.


Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 3783-3783
Author(s):  
Adriana Muniz ◽  
Ronald L. Nagel ◽  
Zhoreh Rahimi ◽  
Asad V. Raygani ◽  
Reza Akramipour ◽  
...  

Abstract HbQ-Iran [α75 (EF4) Asp→His] is an α-chain variant first described in 1970, which substitution is not involved in the interchain contacts of hemoglobin. It has a slow-moving migration pattern on cellulose acetate at alkaline pH, that resembles the Hb S, but with normal solubility. The quantity of this variant in the heterozygous state has been reported to be 17–19%. Heterozygotes individuals with HbQ-Iran are hematologically asymptomatic and the combination with α+-thalassemia and β0- thalassemia has not been reported up to now. We here described the hematological characteristics of a 5 years old child referred to the clinic of Kermanshah University. Physical examination revealed no enlargement of the spleen, and the initial blood count indicated a mild microcytic anemia with low levels of Hb (10g/dL), a hematocrit of 30.5% and low MCV and MCH (59.3fL and 19.6pg) respectively. DNA analysis revealed the presence of HbQ-Iran, −α3.7 kb deletion of the alpha globin genes and also the presence of the mutation (IVSII.1.G→A) β0-thalassemia in the child. The study of the family revealed the presence of a minor β-thalassemia in the father and the HbQ-Iran in the mother. Both parents were heterozygous for the −α3.7 deletion (−α3.7/α α) in the α-globin genes. The coinheritance of HbQ-Iran with −α3.7 deletion and β-thalassemia resulted in an elevation of the levels of HbQ-Iran to 22.4%. However, the remainder hematological values of the young patient indicated a significant reduction in MCV (59.3 fL) and MCH (19.6 pg), an elevation of HbF (6.3%) and of HbA2 (3.7%) according to a picture of a minor β-thalassemia. This result demonstrated that HbQ-Iran is a benign structural variant, that in combination with β0-thalassemia and in the presence of a α+-thalassemia, produce a minor β-thalassemia picture with moderate anemia and elevation of HbF. The application of DNA technologies allowed the identification for the first time of the presence in one individual of three already known mutations, emphasizing the unique genetic heterogeneity of this population.


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