Study of the Effect of Saline Solution on the Extraction of the Moringa oleifera Seed’s Active Component for Water Treatment     

Grasiele Scaramal Madrona  Geovanna Bordini Serpelloni  Angélica Marquetotti Salcedo Vieira  Letícia Nishi  Karina Cordeiro Cardoso  Rosângela Bergamasco 《Water, air, and soil pollution》2010,211(1-4):409-415

Several coagulants/flocculants have been studied in order to remove the color and turbidity of raw water, employing natural ones demonstrated advantages in relation to chemicals. Moringa oleifera Lam is a natural polymer that has been gaining prominence in water treatment. It acts as a clarifying agent, providing a cationic protein that destabilizes the particles contained in a liquid medium. The main objective of the present work is to study the efficiency in terms of removing color and turbidity of raw water in order to obtain drinking water. For this purpose, different coagulant solutions were obtained utilizing three solutions of KCl in different concentrations (0.01, 0.1, and 1 M) and pure water combined with M. oleifera Lam seed. Each coagulant solution obtained was studied with concentrations ranging from 50 to 600 ppm of Moringa in solution. The pH was varied (4.0, 6.0, and 8.0) with 25% and 50% sodium hydroxide solution (NaOH) and hydrochloric acid (HCl), respectively. The tests were conducted with the “Jar Test Device” and the efficiency of the process was evaluated regarding the reduction of color and turbidity. The best results were found employing the coagulant solutions extracted with 1 M salt solution, pH 8.0, and different concentrations of coagulant solution. It is important to explain that the best results were in various concentration ranges, as the concentration of protein in solution becomes higher, the greater is its power as a coagulant. The lowest content of protein was found in the solution extracted with water, which consequently had the lowest values of color and turbidity removal.  相似文献   

Fatal anemia and dermatitis in captive agoutis (Dasyprocta mexicana) infested with Echidnophaga fleas     

Cucchi-Stefanoni K  Juan-Sallés C  Parás A  Garner MM 《Veterinary parasitology》2008,155(3-4):336-339

Two captive agoutis (Dasyprocta mexicana) died of anemia with centrilobular hepatocellular necrosis (2/2), severe flea ectoparasitism (2/2), and cardiomegaly attributed to anemia (1/2). Other agoutis were similarly parasitized and one had anemia. Fleas were manually removed and all agoutis treated topically with propoxur and selamectin and moved to another enclosure. No additional cases of fatal anemia were seen. Cutaneous lesions suggestive of hypersensitivity were observed in three additional agoutis with dorsal alopecia (3/3), a penetrating wound associated with pruritus and self-mutilation in the flank (2/3), flea ectoparasitism at the time of morphologic diagnosis (1/3), and hyperplastic perivascular dermatitis (3/3). One of these died of bacterial infection of the wound. Similar but milder skin disease was seen in 3 out of over 30 maras (Dolichotis patagonum) housed in the same exhibit. Fleas collected from all the fatal agouti cases and maras were classified in the genus Echidnophaga based on the angular front margin of head, contracted thorax, absence of genal and pronotal combs, and the fact that fleas did not jump. These findings suggest that flea ectoparasitism may be an important cause of morbidity and mortality in captive rodents.  相似文献   

Errata     

Kell Kristiansen  Lars P. Christensen  Yurong Chen  Edward O. Kenaschuk  J. Doug Procunier 《Euphytica》1998,104(2):141-142

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Exposure to cyantraniliprole causes mortality and disturbs behavioral and respiratory responses in the coffee berry borer (Hypothenemus hampei)     

Angelica Plata‐Rueda  Luis Carlos Martínez  Brenda Karina R Da Silva  Jos C Zanuncio  Maria Elisa de S Fernandes  Raul Narciso C Guedes  Flvio L Fernandes 《Pest management science》2019,75(8):2236-2241

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Eimeria infection of angora goats     

A F Korkin  A D Bakaeva  R A Karina  Z G Serova 《Veterinariia》1979,(12):42-43

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Heart structure and coronary blood supply of the Giant anteater (Myrmecophaga tridactyla)     

Nathany Ribeiro Lima dos Santos  Edson José Benetti  Kleber Mirallia de Oliveira  Max Vinicius Malmann Medeiros  Karina Simões 《Anatomia, histologia, embryologia》2021,50(1):15-22

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Characterization and quantification of phenolic compounds in olive oils by solid-phase extraction, HPLC-DAD, and HPLC-MS/MS     

de la Torre-Carbot K  Jauregui O  Gimeno E  Castellote AI  Lamuela-Raventós RM  López-Sabater MC 《Journal of agricultural and food chemistry》2005,53(11):4331-4340

A simple and reproducible method for qualitative and quantitative analysis of phenolic compounds in virgin olive oils by solid-phase extraction (SPE), high performance liquid chromatography with diode array detector (HPLC-DAD), and HPLC-mass spectrometry (MS) in tandem mode was developed. The polar fraction was obtained from samples of three different virgin olive oils. Detection and quantification were performed at 280, 240, and 320 nm. For identification purposes, HPLC-MS/MS was equipped with turbo ion spray source in the negative-ion mode. Twenty compounds of twenty-three detected and quantified were characterized. The method showed satisfactory linearity (r > 0.99), good recovery, satisfactory precision, and appropriate limits of detection (LOD) and quantification (LOQ).  相似文献   

Trends in soil science: organochlorine pesticides in argentinean soils   总被引：1，自引：0，他引：1  

Karina?S.?B.?MiglioranzaEmail author  Julia?E.?Aizpún?de?Moreno  Víctor?J.?Moreno 《Journal of Soils and Sediments》2003,3(4):264-265

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Genetic certification of presumed hybrids of blue × red abalone (Haliotis fulgens Philippi and H. rufescens Swainson)     

Ana M Ibarra  Norma Karina Hernández-Ibarra  Pedro Cruz  Ricardo Pérez-Enríquez  Susana Ávila  & José L Ramírez 《Aquaculture Research》2005,36(14):1356-1368

Presumed hybrids between Haliotis rufescens and H. fulgens abalones, produced in a commercial abalone laboratory, were evaluated for progeny viability, gonad characteristics and for their ‘true’ status as hybrids by means of allozyme and microsatellite analyses. Four out of 10 evaluated allozyme loci proved to be useful for the genetic certification of hybrids, Gpi, Mdh‐1, Mdh‐2 and Sod, as they had exclusive alleles for each of the abalone reference species from which the presumed hybrids were produced. Three microsatellite loci were also evaluated for their usefulness in abalone hybrid certification. Two were not useful for hybrid certification as the reference abalone species shared some of the same alleles. The third loci (Hka 56) also had shared alleles between the two species, but at very different frequencies. Therefore, this permitted a presumptive certification of hybrids, which, however, was not error‐proof as two allozyme certified hybrids were wrongly classified as H. rufescens rather than as hybrids. Progeny viability of the only female certified to be a hybrid was significantly lower compared with one viability of the other females spawned, which were certified as H. rufescens. However, the number of eggs spawned by the only certified hybrid female was as large as those spawned by females certified as H. rufescens. Gonads of abalones sampled for the macroscopic appearance of sterility indicated that in the absence of any gonad development, no distinctive difference allows for hybrid identification, as there were undifferentiated individuals that were both hybrid and non‐hybrid. On the other hand, two certified hybrid males were characterized by spermatocytes being the most abundant gamete type, although one had some spermatozoa present, indicating only partial sterility. Among the two female hybrids found, vitellogenesis was observed to proceed up to vitellogenic oocytes.  相似文献   

Effects of donor plant temperature,photoperiod, and age on anther culture response of Capsicum annuum L.   总被引：7，自引：0，他引：7  

Kell Kristiansen  Sven Bode Andersen 《Euphytica》1993,67(1-2):105-109

Summary Effects of temperature and photoperiod for donor plant growth on embryo formation in Capsicum annuum anther culture were investigated. Donor plants were grown in glasshouses at minimum temperatures between 16 and 30° C and at photoperiods between 11 and 19 h. Anthers were collected from individual plants over five to nine week periods to test the significance of donor plant age. Embryos were obtained at all temperature regimes with a calculated optimum temperature of 26.4° C. Embryo formation was unaffected by the photoperiods tested. Embryo formation varied among successive samplings. However, a significant decline in anther culture response with increasing donor plant age was observed in all three experiments.Abbreviations AT average air temperature the week before anther incubation - EMB 100 1n (embryos per 100 anthers +1)  相似文献