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Biohydrogen production and its bioeconomic impact:a review

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Waste Disposal and Sustainable Energy 2022年第3期4卷 219-230页

作者： Kanika Dulta Adedapo o.Adeola Segun E.Ashaolu Titilope I.Banji joshua o.ighalo Faculty of Applied Sciences and Biotechnology Shoolini UniversitySolan-173229Himachal PradeshIndia Department of Chemical Sciences Adekunle Ajasin UniversityAkungba-AkokoOndo StateNigeria Department of Chemical Sciences University of JohannesburgDoornfontein2028South Africa Department of Chemical Engineering Ladoke Akintola University of TechnologyP.M.B.4000OgbomosoNigeria Department of Mechanical Engineering University of IbadanP.M.B.3017IbadanNigeria Department of Chemical Engineering Nnamdi Azikiwe UniversityP.M.B.5025AwkaNigeria Department of Chemical Engineering University of IlorinP.M.B.1515IlorinNigeria

The production of biohydrogen from biological processes is cleaner and more sustainable than that of fossil fuel-based *** drive for cleaner and sustainable energy sources is an important facet of the *** on these findings,this paper aimed to examine the significance and impact of biohydrogen on the *** bioprocessing strategies are primarily biophotolysis,fermentation and bio-electrolytic *** that biological processes are slow compared to other thermochemical production processes,production volumes cannot match that of the *** inherently slow nature of biochemical reactions taking place in living organisms is a challenge that puts biohydrogen at a *** processes are also very sensitive to temperature and pH,thereby requiring more intricate process monitoring and *** obtain equivalent volumes of biohydrogen compared to production strategies,larger and more intricate facilities would be needed,implying more cost *** is surmised that biohydrogen will continue to play an important role in the drive for a sustainable bioeconomy despite the current challenges it faces.

关键词： Biohydrogen Bioeconomy Energy Sustainable development Microalgae

Influence of climate fluctuations on Pinus palustris growth and drought resilience

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Forest Ecosystems 2023年第6期10卷 681-689页

作者： Joao Campoa joshua Puhlick CENSE–Center for Environmental and Sustainability Research CHANGE-Global Change and Sustainability InstituteDepartment of Environmental Sciences and EngineeringNOVA School of Science and TechnologyNOVA University LisbonCampus de Caparica2829-516 CaparicaPortugal The Jones Center at Ichauway 3988 Jones Center Drive39870NewtonGAUSA

The longleaf pine(Pinus palustris Mill.)ecosystem is an endangered ecosystem in the southeastern USA,and efforts to restore the species are ***,in recent decades,the region has experienced drastic fluctuations between wet and dry growing season conditions from year to year,and it is not fully understood how these fluctuations have influenced the growth of *** address this topic,we cored *** trees in woodlands of southwest Georgia and used dendrochronology techniques to determine how climate fluctuations have influenced the growth and drought resilience of *** also cored slash pine(Pinus elliottii Engelm.)trees in the same woodlands to compare growth between *** *** growth was less impacted by adverse climate conditions compared to ***,the strength of correlations between *** growth and temperature,precipitation,and Palmer Drought Severity Index(PDSI)changed over *** recent decades,climate conditions during the growing season became more influential on *** growth than the previous year's *** is concerning given that drought severity during the growing season has been *** results also indicate that *** was less resilient to droughts during the 2000s and 2010s than to those of the *** this new climate paradigm,our results suggest that *** might be more susceptible to growth reductions and less resistant to droughts than once *** work highlights the importance of understanding the impact of novel climate conditions on *** and has implications for restoration efforts,such as using silvicultural treatments that reduce tree vulnerability to drought(e.g.,thinning)and promote other climate-adapted species in mixture with ***.

关键词： Longleaf pine Slash pine Pinus elliottii Climate change Dendrochronology Dendroclimatology Forest disturbances

How well does XAD resin extraction recover halogenated disinfection byproducts for comprehensive identification and toxicity testing?

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Journal of Environmental Sciences 2022年第7期34卷 264-275页

作者： Xiaobin Liao joshua M.Allen Caroline o.Granger Susan D.Richardson Department of Chemistry and Biochemistry University of South CarolinaColumbiaSouth Carolina 29208USA Institute of Municipal and Environmental Engineering College of Civil EngineeringHuaqiao UniversityFujian 361021China Currently at LanzaTech 535 Commerce DriveSopertonGeorgia 30457USA

Halogenated disinfection byproducts(DBPs) are an unintended consequence of drinking water disinfection, and can have significant toxicity. XAD resins are commonly used to extract and enrich trace levels of DBPs for comprehensive, nontarget identification of DBPs and also for in vitro toxicity studies. However, XAD resin recoveries for complete classes of halogenated DBPs have not been evaluated, particularly for low, environmentally relevant levels(ng/L to low μg/L). Thus, it is not known whether levels of DBPs or the toxicity of drinking water might be underestimated. In this study, DAX-8/XAD-2 layered resins were evaluated, considering both adsorption and elution from the resins, for extracting 66 DBPs from water. Results demonstrate that among the 7 classes of DBPs investigated, trihalomethanes(THMs), including iodo-THMs, were the most efficiently adsorbed, with recovery of most THMs ranging from 50%-96%, followed by halonitromethanes(40%-90%). The adsorption ability of XAD resins for haloacetonitriles, haloacetamides, and haloacetaldehydes was highly dependent on the individual species. The adsorption capacity of XAD resins for haloacetic acids was lower(5%-48%), even after adjusting to p H 1 before extraction. Recovery efficiency for most DBPs was comparable with their adsorption, as most were eluted effectively from XAD resins by ethyl acetate. DBP polarity and molecular weight were the two most important factors that determine their recovery. Recovery of trichloromethane, iodoacetic acid, chloro-and iodo-acetonitrile, and chloroacetamide were among the lowest, which could lead to underestimation of toxicity, particularly for iodoacetic acid and iodo-acetonitrile, which are highly toxic.

关键词： XAD resins Disinfection byproducts DBPs Recovery Toxicity

Protein-protein interface analysis of the non-ribosomal peptide synthetase peptidyl carrier protein and enzymatic domains

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Synthetic and Systems Biotechnology 2022年第2期7卷 671-682页

作者： joshua C.Corpuz Javier o.Sanlley Michael D.Burkart Department of Chemistry and Biochemistry University of California-San Diego9500 Gilman DriveLa JollaCA92093-0358USA

Non-ribosomal peptide synthetases(NRPSs)are attractive targets for biosynthetic pathway engineering due to their modular architecture and the therapeutic relevance of their *** catalysis mediated by specific protein-protein interactions formed between the peptidyl carrier protein(PCP)and its partner enzymes,NRPS enzymology and control remains fertile ground for *** review focuses on the recent efforts within structural biology by compiling high-resolution structural data that shed light into the various protein-protein interfaces formed between the PCP and its partner enzymes,including the phosphopantetheinyl transferase(PPTase),adenylation(A)domain,condensation(C)domain,thioesterase(TE)domain and other tailoring enzymes within the *** our understanding of how the PCP recognizes partner proteins with the potential to use directed evolution and combinatorial biosynthetic methods will enhance future efforts in discovery and production of new bioactive compounds.

关键词： Natural products Protein-protein interactions Non-ribosomal peptide synthetase Peptidyl carrier protein Combinatorial biosynthesis Synthetic biology

Effect of inflammatory bowel disease treatments on patients with diabetes mellitus

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World Journal of Diabetes 2021年第8期12卷 1248-1254页

作者： joshua Ashley Jack Bower Lauren o'Flynn Rakhi Kakad David Aldulaimi Department of Gastroenterology South Warwickshire Foundation TrustWarwick CV345BWUnited Kingdom Department of Endocrinology South Warwickshire Foundation TrustWarwick CV345BWUnited Kingdom

As medical care progresses and the number of patients with chronic conditions increases there is the inevitable challenge of managing patients with multiple *** bowel disease(IBD)is an umbrella term for are inflammatory conditions affecting the gastrointestinal tract,the two most common forms being Ulcerative Colitis and Crohn’s *** diseases,usually diagnosed in young adults,exhibit a relapsing and remitting course and usually require longterm *** can be treated with a number of topical and systemic *** conducted a review of the current published evidence for the effects these medications can have on diabetes mellitus(DM)and glycaemic *** were conducted on medline and embase with a timeframe from 1947(the date from which studies on embase are recorded)to November *** publications were selected and *** evidence of the impact of aminosalicylates,corticosteroids,thiopurines,and biologic agents was *** there was limited evidence for certain agents,IBD medications have been shown to have an effect of DM and these effects should be considered in managing patients with dual *** effects of steroids on blood sugar control is well documented,but consideration of other agents is also *** patients requiring steroids for Ulcerative Colitis,locally acting steroid agents delivered rectally may be preferred to minimise side effects in those with distal bowel Ulcerative Colitis.A switch to other agents should be considered as soon as possible in people with diabetes to limit the impact on glycaemic control.5-aminosalicylates appear to play a role in the reduction of hemoglobin A1c(HbA1c),although the literature suggests these may be falsely low ***,monitoring of people with diabetes on these agents may require daily monitoring of capillary blood sugars rather than relying simply on HbA1c;for example fructosamine performed 3-6 monthly,although th

关键词： Inflammatory bowel disease Diabetes mellitus Crohn's disease Ulcerative colitis Anti-tumor necrosis factor-α Corticosteroids

Initial assessment of imports of chlorinated paraffins into Nigeria and the need of improvement of the Stockholm and Rotterdam Conventions

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Emerging Contaminants 2022年第1期8卷 360-370页

作者： joshua o.Babayemi Innocent C.Nnorom Roland Weber Environmental Management and Toxicology Department of Biological SciencesUniversity of Medical Sciences OndoNigeria Anchor University Centre for Global Health Nigeria Department of Pure and Industrial Chemistry Abia State University UturuNigeria PoPs Environmental Consulting 73527Schw€abisch GmündGermany

Short-chain and medium-chain chlorinated paraffins(SCCPs/MCCPs)are of concern due to their persistence,bioaccumulation,and *** were listed in 2017 as persistent organic pollutants(PoPs)in the Stockholm Convention and Rotterdam Convention for Prior Informed Consent(PIC)*** are evaluated in the PoPs Reviewing Committee for *** in Africa demonstrate high SCCP/MCCP levels in house dust and human ***,this study undertook an initial assessment of the production and import situation in *** Nigerian government has not assessed SCCPs yet and has no registered exemptions for SCCPs and therefore should not produce or use ***,Nigeria has not notified Rotterdam Convention of PIC procedure and,therefore,no SCCP should be imported into *** no local production of SCCPs/MCCPs was observed in Nigeria,this study therefore compiled data on importation of SCCPs/MCCPs and products which may likely contain these chemicals from the UN Comtrade Database for the period 1996 to *** the listing of SCCPs in the Rotterdam Convention,there is still no specific Harmonized System(HS)codes for SCCPs/*** study therefore used HS codes of product categories known to contain SCCPs/*** substance categories under which SCCP/MCCPs are usually imported include plasticisers and other product categories that amounted to 229,779 and 518,342 tonnes respectively but without specific information on the type of *** 39%of PVC and rubber imports of 2,683,015 tonnes and 3,516,052 tonnes respectively contain *** on the SCCP and MCCP impact factors from literature for China,the highest amount of SCCP(33,712 tonnes)was imported in the different PVC products while rubber products accounted to 1386 tonnes and PUR foam to 2331 *** amount of imported MCCPs in PVC products(25,599 tonnes)and rubber products(32,317 tonnes)was in the same order of magnitude while MCCP imported in PUR foam was estimated

关键词： SCCPs/MCCPs Plasticisers Importation PVC HS Code Inventory Nigeria

Regular orbits of Extra-special Groups

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Algebra Colloquium 2016年第4期23卷 681-688页

作者： joshua E. Goodson Texas A&M University at Galveston Department of General Academics P.O. Box 1675 Galveston Texas 77553 USA

In this paper, for odd primes p we find a recursive formula for the number of regular orbits of an extra-special p-group of exponent p2 acting on a faithful irreducible module over a finite field. This complements an ... 详细信息

关键词： extra-special orbits counting p-groups

Pore pressure prediction in offshore Niger delta using data-driven approach: Implications on drilling and reservoir quality

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Energy Geoscience 2023年第3期4卷 252-265页

作者： joshua Pwavodi Ibekwe N.Kelechi Perekebina Angalabiri Sharon Chioma Emeremgini Vivian o.oguadinma Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIRDUGEISTerre38000GrenobleFrance TotalEnergies SA CSTJF Avenue Larribau64000PauFrance Centre of Excellence in Petroleum Geoscience and Engineering University of BeninBenin CityEdo StateNigeria Univ.Lille CNRSUniv.Littoral Cote d’OpaleUMR 8187LOGLaboratoire d’Oceanologie et de Geosciences59000LilleFrance

Despite exploration and production success in Niger Delta,several failed wells have been encountered due to ***,it is very essential to understand the spatial distribution of pore pressure and the generating mechanisms in order to mitigate the pitfalls that might arise during *** research provides estimates of pore pressure along three offshore wells using the Eaton's transit time method,multi-layer perceptron artificial neural network(MLP-ANN)and random forest regression(RFR)*** results show that there are three pressure magnitude regimes:normal pressure zone(hydrostatic pressure),transition pressure zone(slightly above hydrostatic pressure),and over pressured zone(significantly above hydrostatic pressure).The top of the geopressured zone(2873 mbRT or 9425.853 ft)averagely marks the onset of overpressurization with the excess pore pressure above hydrostatic pressure(P∗)varying averagely along the three wells between 1.06−24.75 *** results from the three methods are self-consistent with strong correlation between the Eaton's method and the two machine learning *** models have high accuracy of about>97%,low mean absolute percentage error(MAPEoefficient of determination(R2>0.98).our results have also shown that the principal generating mechanisms responsible for high pore pressure in the offshore Niger Delta are disequilibrium compaction,unloading(fluid expansion)and shale diagenesis.

关键词： Niger Delta Pore pressure Reservoir Fracturing pressure Artifidal neural network Machine leaming algorithm Random forest regression

Sodium arsenite reduces severity of dextran sulfate sodium-induced ulcerative colitis in rats

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第4期9卷 341-350页

作者： joshua J. MALAGo Hortensia NoNDoLI Department of Pathology Faculty of Veterinary Medicine Sokoine University of Agriculture P.O. Box 3203 Morogoro Tanzania Regional Immigration office P.o. Box 649 Mtwara Tanzania

The histopathological features and the associated clinical findings of ulcerative colitis (UC) are due to persistent inflammatory response in the colon mucosa. Interventions that suppress this response benefit UC patients. We tested whether sodium arsenite (SA) benefits rats with dextran sulfate sodium (DSS)-colitis. The DSS-colitis was induced by 5% DSS in drinking water. SA (10 mg/kg; intraperitoneally) was given 8 h before DSS treatment and then every 48 h for 3 cycles of 7, 14 or 21 d. At the end of each cycle rats were sacrificed and colon sections processed for histological examination. DSS induced diarrhea, loose stools, hemoccult positive stools, gross bleeding, loss of body weight, loss of epithelium, crypt damage, depletion of goblet cells and infiltration of inflammatory cells. The severity of these changes increased in the order of Cycles 1, 2 and 3. Treatment of rats with SA significantly reduced this severity and improved the weight gain.

关键词： Ulcerative colitis Dextran sulfate sodium Sodium arsenite Rats