2,475 research outputs found
Identification of a rare blood group, "Bombay (Oh) phenotype," in Bhuyan tribe of Northwestern Orissa, India
No full textBackground: Blood group serology plays a vital role in transfusion
medicine. The Bombay (Oh) phenotype is characterized by the absence of
A, B, and H antigens on red cells and occurs rarely, especially in
tribal populations of India. Aims and Objectives: This is a
field-based random population study in the Bhuyan tribal community. The
study reports three cases of the rare Bombay (Oh) phenotype for the
first time in the Bhuyan tribe of Sundargarh district in North-Western
Orissa. Materials and Methods: Taking informed consent, red blood cells
of 836 Bhuyan subjects were tested with three antisera, i.e., anti-A,
anti-B, and anti-H (lectin) for forward reaction. Agglutinations of
plasma with A, B, and O (H) red cells (reverse reaction) were also
tested for the presence or absence of antibodies in the serum.
Specialized tests like absorption-elution, titration of naturally
occurring antibodies at different temperatures, inhibition of anti-H by
O saliva secretor, and determination of secretor status were performed.
Results: Three cases of a rare blood group, Bombay (Oh) phenotype, (2
out of 244 Khandayat Bhuyan and 1 out of 379 Paudi Bhuyan from Hemgiri
and Lahunipara blocks, respectively) in the Bhuyan tribe of Sundargarh
district in North-Western Orissa were detected, giving an incidence of
1 in 122 in Khandayat Bhuyan and 1 in 379 in Paudi Bhuyan, with an
average of 1 in 278 among the Bhuyan tribal population. This incidence
is high in comparison to earlier studies reported from India.
Conclusions: The practice of tribal and territorial endogamy in a
smaller effective populations (for example, there are only 3,521
individuals in Paudi Bhuyan) results in smaller marital distance and
inbreeding, leading to increased homozygous expression of rare
recessive genetic characters like the Bombay (Oh) phenotype. This study
further testifies that the incidence is higher in those states of India
where the consanguinity is a common practice
Identification of a rare blood group, "Bombay (Oh) phenotype," in Bhuyan tribe of Northwestern Orissa, India
No full textBackground: Blood group serology plays a vital role in transfusion
medicine. The Bombay (Oh) phenotype is characterized by the absence of
A, B, and H antigens on red cells and occurs rarely, especially in
tribal populations of India. Aims and Objectives: This is a
field-based random population study in the Bhuyan tribal community. The
study reports three cases of the rare Bombay (Oh) phenotype for the
first time in the Bhuyan tribe of Sundargarh district in North-Western
Orissa. Materials and Methods: Taking informed consent, red blood cells
of 836 Bhuyan subjects were tested with three antisera, i.e., anti-A,
anti-B, and anti-H (lectin) for forward reaction. Agglutinations of
plasma with A, B, and O (H) red cells (reverse reaction) were also
tested for the presence or absence of antibodies in the serum.
Specialized tests like absorption-elution, titration of naturally
occurring antibodies at different temperatures, inhibition of anti-H by
O saliva secretor, and determination of secretor status were performed.
Results: Three cases of a rare blood group, Bombay (Oh) phenotype, (2
out of 244 Khandayat Bhuyan and 1 out of 379 Paudi Bhuyan from Hemgiri
and Lahunipara blocks, respectively) in the Bhuyan tribe of Sundargarh
district in North-Western Orissa were detected, giving an incidence of
1 in 122 in Khandayat Bhuyan and 1 in 379 in Paudi Bhuyan, with an
average of 1 in 278 among the Bhuyan tribal population. This incidence
is high in comparison to earlier studies reported from India.
Conclusions: The practice of tribal and territorial endogamy in a
smaller effective populations (for example, there are only 3,521
individuals in Paudi Bhuyan) results in smaller marital distance and
inbreeding, leading to increased homozygous expression of rare
recessive genetic characters like the Bombay (Oh) phenotype. This study
further testifies that the incidence is higher in those states of India
where the consanguinity is a common practice
POTENTIAL APPLICATIONS FOR SHARED-SERVICES COOPERATIVES IN NORTH DAKOTA
No full textThe principal goal of shared-services cooperatives is to capture savings through lower administrative costs, quantity purchasing discounts, sharing fixed costs, and assured levels of business with vendors and suppliers. Although the idea of cooperation is not new in North Dakota, the question raised here is whether there is potential applications for non-agricultural shared-services cooperatives that provide services that are absent or inadequate in rural communities in the state. It is concluded that there is potential application for shared-services cooperatives in both public and private sectors in North Dakota based on opportunities to share fixed costs and to capitalize on pecuniary economies of size.shared-services cooperatives, non-agricultural cooperatives, North Dakota, Agribusiness,
Highly porous alkali activated foams for water and wastewater treatment
No full textAbstract
Alkali-activated materials (AAMs) have diverse applications in water and wastewater treatment. In this thesis, porous AAM foams were prepared with the goal to explore their potential use in new applications for water and wastewater treatment, namely adsorptive filters, point-of-use water disinfection, and separation of microplastics.
The adsorptive filters were prepared from blast furnace slag and optimized by comparing five different surfactants and doses of H2O2. Porous AAM exhibiting the highest mechanical strength was investigated for methylene blue adsorption. To further enhance the adsorption performance, a lignin-containing composite foam was prepared. In the dynamic adsorption experiments, the highest adsorption amount obtained with the lignin-composite foam was ~40 mg/g. Moreover, peracetic acid was investigated as an alternative foaming agent in the preparation of porous AAMs. During the investigation, lower volume expansion and faster reaction kinetics with reduced setting time were observed for peracetic acid-based porous AAM compared to H2O2-based porous AAM.
To develop material for point-of-use water disinfection, the first goal was to achieve comparable water permeability to traditional ceramic filters by varying the amount of hydrogen peroxide. An optimized foam was then treated with colloidal Ag solution to explore its potential use in disinfecting water for 10 weeks. The modified foam demonstrated a significant reduction (2.84 log10 units) in E. coli bacteria compared to an unmodified filter (1.57 log10 units). Additionally, the environmental impact of the porous AAM was analyzed through life cycle assessment and found to be lower than that of conventional ceramic filter.
Finally, to develop material capable of separating microplastics, porous AAM surface was modified with triethoxy(octyl)silane to render it superhydrophobic. The modified porous AAM demonstrated over 99% separation efficiency when treating 30 L of model water containing 5 mg/L of polyethylene microspheres (53-63 μm). Its performance was also evaluated in treating laundry effluent, where the modified porous AAM achieved approximately 84% separation compared to around 52% for the unmodified porous AAM. Original papers Bhuyan, M. A. H., Gebre, R. K., Finnilä, M. A. J., Illikainen, M., & Luukkonen, T. (2022). Preparation of filter by alkali activation of blast furnace slag and its application for dye removal. Journal of Environmental Chemical Engineering, 10(1), 107051. https://doi.org/10.1016/j.jece.2021.107051 https://doi.org/10.1016/j.jece.2021.107051 Self-archived version Bhuyan, M. A. H., & Luukkonen, T. (2024). Adsorption of methylene blue by composite foams containing alkali-activated blast furnace slag and lignin. International Journal of Environmental Science and Technology, 21(4), 3789–3802. https://doi.org/10.1007/s13762-023-05245-5 https://doi.org/10.1007/s13762-023-05245-5 Self-archived version Bhuyan, M. A. H., Kurtulus, C., Heponiemi, A., & Luukkonen, T. (2023). Peracetic acid as a novel blowing agent in the direct foaming of alkali-activated materials. Applied Clay Science, 231, 106727. https://doi.org/10.1016/j.clay.2022.106727 https://doi.org/10.1016/j.clay.2022.106727 Self-archived version Bhuyan, M. A. H., Karkman, A., Prokkola, H., Chen, B., Perumal, P., & Luukkonen, T. (2024). Alkali-activated foams coated with colloidal Ag for point-of-use water disinfection. ACS ES&T Water, 4(2), 687–697. https://doi.org/10.1021/acsestwater.3c00711 https://doi.org/10.1021/acsestwater.3c00711 Self-archived version Bhuyan, M. A. H., Busquets, R., Campos, L. C., & Luukkonen, T. (2024). Separation of microplastics from water using superhydrophobic silane-coupling-agent-modified geopolymer foam. Separation and Purification Technology, 339, 126709. https://doi.org/10.1016/j.seppur.2024.126709 https://doi.org/10.1016/j.seppur.2024.126709 Self-archived version Abstrakti
Alkaliaktivoiduilla materiaaleilla on runsaasti erilaisia sovelluksia veden ja jäteveden käsittelyssä. Tässä väitöskirjassa valmistettiin huokoisia alkaliaktivoituja vaahtoja tavoitteena selvittää niiden uusia hyödyntämismahdollisuuksia adsorboivina suodatinmateriaaleina, veden desinfioinnissa ja mikromuovin erottamisessa.
Masuunikuonasta valmistettujen adsorboivien suodattimien koostumus optimoitiin muuttamalla valmistuksessa käytetyn pinta-aktiivisen aineen tyyppiä sekä vaahdotinaineena toimivan vetyperoksidin lisäysmäärää. Optimoidulla materiaalilla tutkittiin metyleenisinisen adsorptiota vedestä. Adsorptiokyvyn lisäämiseksi valmistettiin ligniiniä sisältävää komposiittimateriaalia. Dynaamisessa metyleenisinisen adsorptiokokeessa suurin adsorptiomäärä ligniinikomposiitille oli ~40 mg/g. Lisäksi peretikkahappoa tutkittiin vaihtoehtoisena vaahdotusaineena. Peretikkahappoa käytettäessä havaittiin pienempi turpoaminen valmistuksen aikana ja lyhyempi kovettumisaika verrattuna vetyperoksidilla valmistettuihin vaahtoihin.
Tutkimuksen seuraavassa osassa tutkittiin veden desinfiointia. Alkaliaktivoituja vaahtoja valmistettiin metakaoliinista, masuunikuonasta ja niiden seoksista tavoitteena saavuttaa samanlainen veden läpäisevyys kuin keraamisilla suodattimilla. Tämän jälkeen optimoitua vaahtoa käsiteltiin kolloidisella hopealiuoksella ja sen käyttömahdollisuuksia veden desinfioinnissa tutkittiin 10 viikon ajan. Hopeaa sisältävä vaahto osoitti merkittävää E. coli -bakteerien vähenemistä (2,84 log10) verrattuna hopeaa sisältämättömään suodattimeen (1,57 log10). Lisäksi alkaliaktivoidun vaahdon ympäristövaikutuksia analysoitiin elinkaariarvioinnin avulla ja niiden todettiin olevan pienempiä kuin perinteisen keraamin.
Mikromuovien erottamiseksi alkaliaktivoituja vaahtoja käsiteltiin trietoksi(oktyyli)silaanilla superhydrofobisen pinnan luomiseksi. Käsitelty vaahto poisti yli 99 % mikromuovista kokeessa, jossa käsiteltiin 30 litraa vettä, joka sisälsi 5 mg/l polyetyleenipartikkeleita (koko 53–63 μm). Käsitellyn vaahdon suorituskykyä arvioitiin myös pyykinpesuveden käsittelyssä, jossa sen muovin poistokyky oli noin 84 % kun taas ei-käsitelty vaahto poisti vain 52 %. Osajulkaisut Bhuyan, M. A. H., Gebre, R. K., Finnilä, M. A. J., Illikainen, M., & Luukkonen, T. (2022). Preparation of filter by alkali activation of blast furnace slag and its application for dye removal. Journal of Environmental Chemical Engineering, 10(1), 107051. https://doi.org/10.1016/j.jece.2021.107051 https://doi.org/10.1016/j.jece.2021.107051 Rinnakkaistallennettu versio Bhuyan, M. A. H., & Luukkonen, T. (2024). Adsorption of methylene blue by composite foams containing alkali-activated blast furnace slag and lignin. International Journal of Environmental Science and Technology, 21(4), 3789–3802. https://doi.org/10.1007/s13762-023-05245-5 https://doi.org/10.1007/s13762-023-05245-5 Rinnakkaistallennettu versio Bhuyan, M. A. H., Kurtulus, C., Heponiemi, A., & Luukkonen, T. (2023). Peracetic acid as a novel blowing agent in the direct foaming of alkali-activated materials. Applied Clay Science, 231, 106727. https://doi.org/10.1016/j.clay.2022.106727 https://doi.org/10.1016/j.clay.2022.106727 Rinnakkaistallennettu versio Bhuyan, M. A. H., Karkman, A., Prokkola, H., Chen, B., Perumal, P., & Luukkonen, T. (2024). Alkali-activated foams coated with colloidal Ag for point-of-use water disinfection. ACS ES&T Water, 4(2), 687–697. https://doi.org/10.1021/acsestwater.3c00711 https://doi.org/10.1021/acsestwater.3c00711 Rinnakkaistallennettu versio Bhuyan, M. A. H., Busquets, R., Campos, L. C., & Luukkonen, T. (2024). Separation of microplastics from water using superhydrophobic silane-coupling-agent-modified geopolymer foam. Separation and Purification Technology, 339, 126709. https://doi.org/10.1016/j.seppur.2024.126709 https://doi.org/10.1016/j.seppur.2024.126709 Rinnakkaistallennettu versio Academic dissertation to be presented with the assent of the Doctoral Programme Committee of Technology and Natural Sciences of the University of Oulu for public defence in the Arina auditorium (TA105), Linnanmaa, on 3 May 2024, at 12 noonAbstract
Alkali-activated materials (AAMs) have diverse applications in water and wastewater treatment. In this thesis, porous AAM foams were prepared with the goal to explore their potential use in new applications for water and wastewater treatment, namely adsorptive filters, point-of-use water disinfection, and separation of microplastics.
The adsorptive filters were prepared from blast furnace slag and optimized by comparing five different surfactants and doses of H2O2. Porous AAM exhibiting the highest mechanical strength was investigated for methylene blue adsorption. To further enhance the adsorption performance, a lignin-containing composite foam was prepared. In the dynamic adsorption experiments, the highest adsorption amount obtained with the lignin-composite foam was ~40 mg/g. Moreover, peracetic acid was investigated as an alternative foaming agent in the preparation of porous AAMs. During the investigation, lower volume expansion and faster reaction kinetics with reduced setting time were observed for peracetic acid-based porous AAM compared to H2O2-based porous AAM.
To develop material for point-of-use water disinfection, the first goal was to achieve comparable water permeability to traditional ceramic filters by varying the amount of hydrogen peroxide. An optimized foam was then treated with colloidal Ag solution to explore its potential use in disinfecting water for 10 weeks. The modified foam demonstrated a significant reduction (2.84 log10 units) in E. coli bacteria compared to an unmodified filter (1.57 log10 units). Additionally, the environmental impact of the porous AAM was analyzed through life cycle assessment and found to be lower than that of conventional ceramic filter.
Finally, to develop material capable of separating microplastics, porous AAM surface was modified with triethoxy(octyl)silane to render it superhydrophobic. The modified porous AAM demonstrated over 99% separation efficiency when treating 30 L of model water containing 5 mg/L of polyethylene microspheres (53-63 μm). Its performance was also evaluated in treating laundry effluent, where the modified porous AAM achieved approximately 84% separation compared to around 52% for the unmodified porous AAM.Abstrakti
Alkaliaktivoiduilla materiaaleilla on runsaasti erilaisia sovelluksia veden ja jäteveden käsittelyssä. Tässä väitöskirjassa valmistettiin huokoisia alkaliaktivoituja vaahtoja tavoitteena selvittää niiden uusia hyödyntämismahdollisuuksia adsorboivina suodatinmateriaaleina, veden desinfioinnissa ja mikromuovin erottamisessa.
Masuunikuonasta valmistettujen adsorboivien suodattimien koostumus optimoitiin muuttamalla valmistuksessa käytetyn pinta-aktiivisen aineen tyyppiä sekä vaahdotinaineena toimivan vetyperoksidin lisäysmäärää. Optimoidulla materiaalilla tutkittiin metyleenisinisen adsorptiota vedestä. Adsorptiokyvyn lisäämiseksi valmistettiin ligniiniä sisältävää komposiittimateriaalia. Dynaamisessa metyleenisinisen adsorptiokokeessa suurin adsorptiomäärä ligniinikomposiitille oli ~40 mg/g. Lisäksi peretikkahappoa tutkittiin vaihtoehtoisena vaahdotusaineena. Peretikkahappoa käytettäessä havaittiin pienempi turpoaminen valmistuksen aikana ja lyhyempi kovettumisaika verrattuna vetyperoksidilla valmistettuihin vaahtoihin.
Tutkimuksen seuraavassa osassa tutkittiin veden desinfiointia. Alkaliaktivoituja vaahtoja valmistettiin metakaoliinista, masuunikuonasta ja niiden seoksista tavoitteena saavuttaa samanlainen veden läpäisevyys kuin keraamisilla suodattimilla. Tämän jälkeen optimoitua vaahtoa käsiteltiin kolloidisella hopealiuoksella ja sen käyttömahdollisuuksia veden desinfioinnissa tutkittiin 10 viikon ajan. Hopeaa sisältävä vaahto osoitti merkittävää E. coli -bakteerien vähenemistä (2,84 log10) verrattuna hopeaa sisältämättömään suodattimeen (1,57 log10). Lisäksi alkaliaktivoidun vaahdon ympäristövaikutuksia analysoitiin elinkaariarvioinnin avulla ja niiden todettiin olevan pienempiä kuin perinteisen keraamin.
Mikromuovien erottamiseksi alkaliaktivoituja vaahtoja käsiteltiin trietoksi(oktyyli)silaanilla superhydrofobisen pinnan luomiseksi. Käsitelty vaahto poisti yli 99 % mikromuovista kokeessa, jossa käsiteltiin 30 litraa vettä, joka sisälsi 5 mg/l polyetyleenipartikkeleita (koko 53–63 μm). Käsitellyn vaahdon suorituskykyä arvioitiin myös pyykinpesuveden käsittelyssä, jossa sen muovin poistokyky oli noin 84 % kun taas ei-käsitelty vaahto poisti vain 52 %
Composition of pteroylpolyglutamates (conjugated folates) into guinea pig liver and their formation from folic acid
No full text
Negotiating Citizenship on the Frontlines: How the Devolution of Canadian Immigration Policy Shapes Service Delivery to Women Fleeing Abuse
No full textAuthor Posting. © Bhuyan 2012. This is the author's version of the work. It is posted here for personal use, not for redistribution. The definitive version was published in Law & Policy, 34(2): 211-236. http://dx.doi.org/ 10.1111/j.1467-9930.2011.00361.xFrom publisher: This article examines how nongovernmental service providers navigate devolutionary trends in Canada, in both immigration control and integration policy, when responding to migrants who come to them for help and support. Drawing upon conceptualizations of citizenship as a “negotiated relationship” (Stasiulis and Bakan 2003), I explore how social service providers, who work amidst a complex interplay of federal, provincial, and local policies, can influence both who is deemed worthy of social membership and what rights an individual can successfully claim from the state. Empirically, this article focuses on observation of community meetings and conversational interviews with service providers in violence against women shelters in Toronto, Ontario, Canada's most populous and diverse city. While service providers navigate different levels of government to advocate for women's rights to seek safety from abuse, I argue that both individual service providers and the organizations in which they work monitor and constrain the degree to which they openly challenge state authority to restrict immigrants' “right to have rights” (Arendt 1951 [1979], 296).This work was generously supported by CERIS—The Ontario Metropolis Centre
Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state
No full textWe report an observation of the B±→J/ψηK± and B0→J/ψηK0S decays using 772×106BB¯¯¯¯ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We obtain the branching fractions B(B±→J/ψηK±)=(1.27±0.11(stat.)±0.11(syst.))×10−4 and B(B0→J/ψηK0S)=(5.22±0.78(stat.)±0.49(syst.))×10−5. We search for a new narrow charmonium(-like) state X in the J/ψη mass spectrum and find no significant excess. We set upper limits on the product of branching fractions, B(B±→XK±)B(X→J/ψη), at 3872MeVc−2 where a C-odd partner of X(3872) may exist, at ψ(4040) and ψ(4160) assuming their known mass and width, and over a range from 3.8 to 4.8GeVc−2. The obtained upper limits at 90% confidence level for XC-odd(3872), ψ(4040), and ψ(4160) are 3.8×10−6, 15.5×10−6, and 7.4×10−6, respectively
Patterns of tubercular lymphadenitis encountered in routine cytology reporting: An experience in a tertiary care center of Northeastern part of India
No full textBackground: Tuberculosis (TB) is the thirteenth leading cause of death and the second leading infectious killer after COVID-19 worldwide in 2020. Fine-needle aspiration (FNA) cytology is a simple and economic procedure for the diagnosis of TB at the initial stage. In this study, we tried to study the various cytomorphological patterns of tubercular lymphadenitis encountered in routine practice.
Materials and Methods: This is a retrospective study that was carried out in a tertiary care setting in north eastern India between 2019 and 2022. We retrieved 305 cases of tubercular lymphadenitis and classified them into 4 morphological patterns. These were: pattern A-Epithelioid granuloma without necrosis; pattern B-Epithelioid granuloma with necrosis; pattern C-Necrosis without epithelioid granuloma and with numerous neutrophilic infiltrate; and pattern D-Cases with numerous macrophages.
Results: In our study, pattern C was the most common (44%) followed by pattern (23%); pattern B was seen in 80 cases (26%); and pattern D was seen in only 22 cases (7%). Among patients with HIV infection, the most common pattern was pattern D (80%).
Conclusion: This study shows that TB lymphadenitis is a disease with various morphological patterns. And understanding it can aid in the accurate diagnosis of tubercular lymphadenitis
Large theta(13) and S-3 Perturbation with Neutrino Mass Matrix
No full textIn various recent neutrino experiments the mixing angle theta(13) has been measured. Interestingly, the mixing angle is found to be large and non-zero which has opened up the possibility of measurement of CP violation. The Tri-Bimaximal neutrino mass matrix, which has been very successful in describing the observed neutrino data so far gives theta(13) to be zero. In this work we have used the democratic neutrino mass matrix and S-3 perturbation to obtain the large theta(13) value. We furthermore show the allowed parameter space of the flavor symmetry breaking parameters
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