New Insights into the Remarkable Difference between CH5– and SiH5–

2021 ◽  
Author(s):  
Thom H. Dunning ◽  
Lu T. Xu ◽  
Jasper V. K. Thompson
Keyword(s):  
Remarkable Difference

PTSA (pressure and thermal swing adsorption) method to remove trihalomethanes from drinking water

1997 ◽  
Vol 35 (7) ◽  
pp. 243-250 ◽  
Author(s):  
Shigekazu Nakano ◽  
Tomoko Fukuhara ◽  
Masami Hiasa
Keyword(s):  
Drinking Water ◽  
Residual Chlorine ◽  
Remarkable Difference ◽  
Adsorption Method ◽  
Heating And Cooling ◽  
Point Of Use ◽  
Thermal Swing Adsorption ◽  
Long Time ◽  
Musty Odor ◽  
Vacuum Heating

It has been widely recognized that trihalomethanes (THMs) in drinking water pose a risk to human health. THMs can be removed to a certain extent by the conventional point-of-use (POU) unit which is composed of activated carbon (AC) and microfilter. But it's life on THMs is relatively shorter than on residual chlorine or musty odor. To extent the life of AC adsorber, pressure and thermal swing adsorption (PTSA) was applied by preferential regeneration of chloroform. PTSA was effective to remove THMs, especially chloroform. Adsorption isotherms of chloroform at 25 and 70°C showed a remarkable difference so that thermal swing was considered effective. Chloroform was also desorbed by reducing pressure. By vacuum heating at 70°C, chloroform was almost desorbed from AC and reversible adsorption was considered possible. A prototype of POU unit with PTSA was proposed. Regeneration mode would consist of dewatering, vacuum heating and cooling (backwashing). The unit was maintained in bacteriostatic condition and could be used for a long time without changing an AC cartridge.

scholarly journals Comparison of Different Parathyroid Autograft Project after Total Parathyroidectomy in Patients with Secondary Hyperparathyroidism

2020 ◽  
Author(s):  
mengjia FEI ◽  
dong XU ◽  
yi LAI ◽  
yanan XU ◽  
jingwen ZHANG ◽  
...  
Keyword(s):  
Secondary Hyperparathyroidism ◽  
Parathyroid Tissue ◽  
Total Parathyroidectomy ◽  
Intact Parathyroid Hormone ◽  
Remarkable Difference ◽  
Recurrence Rates ◽  
Biochemical Characteristics ◽  
Parathyroid Function ◽  
Simple Alternative ◽  
Autograft Group

Abstract Objective To evaluate the feasibility and efficacy of total parathyroidectomy followed by modified needle-quantified injection of parathyroid autograft compared with classic incision and transplantation.Methods We conducted a retrospective study of 171 patients with secondary hyperparathyroidism treated by hemodialysis or peritoneal dialysis. These patients were included in our study from April 2006 to December 2016,who had undergone total parathyroidectomies with autotransplantation . Patients were divided into classic incision for transplantation of parathyroid autograft group and modified needle-quantified injection group. Clinical and biochemical characteristics, including preoperative and postoperative intact parathyroid hormone levels were recorded and compared between two group patients. Results To compare the techniques of modified needle-quantified injection and classic incision and transplantation, pre- and postoperative biochemistry and length of operation was recorded and analyzed. Preoperative biochemistry was similarly in both groups. However, autograft function achieved was significantly faster in the group with modified needle-quantified injection compared with classic incision and transplantation (P = 0.03). Median time to parathyroid function regain was 3 months for injection compared with 7 months for classic incision. There was no remarkable difference in the recurrence rates between the two groups.Conclusion The modified needle-quantified injection of parathyroid tissue is a feasible and simple alternative to the more commonly used method of classic incision and transplantation.

Reaction of sugar allyltins with aldehydes. A remarkable difference in reactivity between furanose and pyranose organometallic derivatives

2001 ◽  
Vol 12 (13) ◽  
pp. 1895-1905 ◽  
Author(s):  
Sławomir Jarosz ◽  
Stanisław Skóra ◽  
Katarzyna Szewczyk ◽  
Zbigniew Ciunik
Keyword(s):  
Remarkable Difference

Remarkable Difference in the Cycloaddition Reactivity between 2-(1-Trimethylsilyloxyvinyl)furan and -thiophene

Heterocycles ◽  
1983 ◽  
Vol 20 (10) ◽  
pp. 1933 ◽  
Author(s):  
Tadashi Sasaki ◽  
Yukio Ishibashi ◽  
Masatomi Ohno
Keyword(s):  
Remarkable Difference

Dense Subspaces of Product Spaces

1983 ◽  
Vol 35 (6) ◽  
pp. 986-1000 ◽  
Author(s):  
Toshiji Terada
Keyword(s):  
The Other ◽  
Countable Family ◽  
Remarkable Difference ◽  
Product Spaces ◽  
Other Hand ◽  
Metrizable Spaces

Unless otherwise specified, all spaces considered here are regular T1-spaces. A space X is called σ-discrete if X is the union of a countable family of discrete subspaces. Arhangel'skii [2] showed that the class of spaces which contain dense σ-discrete subspaces is productive. The fact that the class of spaces which contain dense subspaces of countable pseudocharacter is productive is obtained by Amirdzanov [1]. On the other hand, the class of spaces which contain metrizable spaces as dense subspaces is obviously not productive. As a generalized concept of metrizable spaces there is the concept of σ-spaces [14]. This class of spaces has many similar properties to the class of metrizable spaces. However we will point out a remarkable difference between the class of metrizable spaces and the class of σ-spaces by showing that the class of spaces which contain σ-spaces as dense subspaces is productive.

scholarly journals Spikelet sterility of wheat in farmer's field in Northwest Bangladesh

1970 ◽  
Vol 37 (2) ◽  
pp. 155-160 ◽  
Author(s):  
M Saifuzzaman ◽  
Quazi Abdul Fattah ◽  
M Shahidul Islam
Keyword(s):  
Key Words ◽  
Remarkable Difference ◽  
Direct Influence ◽  
Spikelet Sterility ◽  
Key Words Wheat ◽  
Sowing Dates ◽  
Almost All

In recent decades, sporadic and/or massive occurrence of spikelet sterility in wheat has been found in almost all the wheat growing areas of Bangladesh, especially in northwest Bangladesh where spikelet sterility causes yield reductions considerably. Investigations were carried out to understand the nature and probable cause(s) regarding the spikelet sterility problem in Bangladesh. Observations included varieties of wheat, sowing dates, prevailing weather and also soil boron (B) status in farmer's field of the sterility prone areas in northwest Bangladesh. It was found that the varieties Aghrani, Akbar and Kanchan had higher percentage of spikelet sterility than Sonalika. Seven days earlier sown wheat crops had more spikelet sterility, than seven days later sown ones, and it indicated the influence of environment and/or other cause(s) on spikelet sterility; but did not indicate the direct influence of soil boron, because, no remarkable difference of soil B status existed between the sterility affected and non-affected farmer's field in those areas. Key words: Wheat, Spikelet sterility, Grain set index, Bangladesh doi:10.3329/bjb.v37i2.1724 Bangladesh J. Bot. 37(2): 155-160, 2008 (December)

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