5 results on '"Hosseini, Elias"'
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2. Feasibility of Vis-NIR spectroscopy approach to predict soil biological attributes in arid land soils.
- Author
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Hosseini, Elias, Zarei, Mehdi, Moosavi, Ali Akbar, Ghasemi-Fasaei, Reza, Baghernejad, Majid, and Mozaffari, Hasan
- Subjects
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ARID soils , *ACID phosphatase , *CALCAREOUS soils , *FARMS , *SPECTRAL reflectance - Abstract
Visible and near-infrared (Vis-NIR) reflectance spectroscopy has recently emerged as an efficient and cost-effective tool for monitoring soil parameters and provides an extensive array of measurements swiftly. This study sought to predict fundamental biological attributes of calcareous soils using spectral reflectance data in the Vis-NIR range through the application of partial least square regression (PLSR) and stepwise multiple linear regression (SMLR) techniques. The objective was to derive spectrotransfer functions (STFs) to predict selected soil biological attributes. A total of 97 composite samples were collected from three distinct agricultural land uses, i.e., sugarcane, wheat, and date palm, in the Khuzestan Province, Iran. The samples were analyzed using both standard laboratory analysis and proximal sensing approach within the Vis-NIR range (400–2500 nm). Biological status was evaluated by determining soil enzyme activities linked to nutrient cycling including acid phosphatase (ACP), alkaline phosphatase (ALP), dehydrogenase (DEH), soil microbial respiration (SMR), microbial biomass phosphorus (Pmic), and microbial biomass carbon (Cmic). The results indicated that the developed PLSR models exhibited superior predictive performance in most biological parameters compared to the STFs, although the differences were not significant. Specifically, the STFs acceptably accurately predicted ACP, ALP, DEH, SMR, Pmic, and Cmic with R2val (val = validation dataset) values of 0.68, 0.67, 0.65, 0.65, 0.76, and 0.72, respectively. These findings confirm the potential of Vis-NIR spectroscopy and the effectiveness of the associated STFs as a rapid and reliable technique for assessing biological soil quality. Overall, in the context of predicting soil properties using spectroscopy-based approaches, emphasis must be placed on developing straightforward, easily deployable, and pragmatic STFs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Do bagasse biochar and microbial inoculants positively affect barley grain yield and nutrients, and microbial activity?
- Author
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Hosseini, Elias, primary, Zarei, Mehdi, additional, Sepehri, Mozhgan, additional, and Safarzadeh, Sedigheh, additional
- Published
- 2021
- Full Text
- View/download PDF
4. Do bagasse biochar and microbial inoculants positively affect barley grain yield and nutrients, and microbial activity?
- Author
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Hosseini, Elias, Zarei, Mehdi, Sepehri, Mozhgan, and Safarzadeh, Sedigheh
- Subjects
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MICROBIAL inoculants , *FERTILIZERS , *BIOCHAR , *GRAIN yields , *BIOFERTILIZERS , *BAGASSE , *PLANT colonization , *PLANT growth - Abstract
Biochar as a soil amendment, increases soil fertility and better agricultural production. In addition, the utilization of microbial bio-fertilizers improves soil health and reduces the necessity of excessive chemical fertilizer application. In this regard, the present research was conducted to evaluate the effect of bio-inoculants and bagasse biochar on root colonization, grain nutrients uptake, growth, and yield of barley, and biological activities in a calcareous soil. An experiment was conducted as a factorial arrangement on a completely randomized design with three replications in a greenhouse condition for seven months. The treatments consisted of six bio-fertilizer levels including control, Rhizophagus intraradices, Funneliformis mosseae, Micrococcus yunnanensis, Rhizophagus intraradices + Micrococcus yunnanensis, Funneliformis mosseae + Micrococcus yunnanensis, and three bagasse biochar levels of 0, 1%, and 2% w/w. The application of 2% biochar significantly increased root colonization (32.3%), grain nutrients uptake of N, P, Zn and Cu (10%, 10%, 10%, and 4.3%, respectively), biological yield (5.08%), soil microbial respiration (SMR) (11.3%), and microbial biomass C (MBS) (12.7%) compared to that of B0. Individual application of bio-inoculants and their combination with biochar increased root colonization, grain nutrients (Fe, Zn, Cu, Mn, P, and N) uptake, biological and grain yield, 1000-kernel weight, SMR, and MBS. Application of plant growth promoting microorganisms and bagasse biochar simultaneously makes positive effects on barley and microbial activities, which is a promising strategy. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
5. Hybridilämmitystekniikka rakennuksissa: Tapaustutkimuskohteena Kalaholman ala-aste
- Author
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Råman, Ilkka, Insinööritieteiden korkeakoulu, Virtanen, Markku, Hosseini, Elias, Råman, Ilkka, Insinööritieteiden korkeakoulu, Virtanen, Markku, and Hosseini, Elias
- Abstract
Hybridilämmitystekniikka on vaihtoehtoinen ympäristöystävällinen energiatuotantomuoto rakennuksissa, missä on mahdollisuutena ja suotavaa hyödyntää paikallisia energiatuotantojärjestelmiä. Hybriditekniikan edut itsenäisiin lämmöntuotantojärjestelmiin ovat niiden säädettävyys, ja potentiaalinen mahdollisuus täysin omavaraiseen energiatuotantoon. Hybridijärjestelmien mallintamien on tärkeässä osassa ennen järjestelmän käyttöönottoa. Mallinnus tulee tehdä aina rakennuskohtaisesti käyttäen rakennuksen sijainnista ja käyttötarkoituksesta riippuvia parametrejä. Rakennuksen mallinnuksessa, riippumatta onko kyseessä olemassa oleva rakennus vai uudiskohde, tulisi hybridijärjestelmien toimivuuden analysoinnissa ensisijaisesti varmistaa, että rakennuksen malli on lähtökohtaisesti realistinen. Tämä diplomityö tutkii hybridijärjestelmien hyödyntämistä rakennuksen mittakaavalla. Tutkimus tehtiin yhteistyössä LVI-Insinööritoimisto Vahvaconin kanssa. Tapaustutkimuskohteeksi on valittu Porissa sijaitseva Kalaholman Ala-aste. Kalaholman koulun uhkana on sen purkaminen Porin kaupungin uusiessa kouluverkkojaan. Yhdeksi purkamisen syyksi on esitetty koulujen tarve uudistua. Kalaholman koulussa on käytössä tällä hetkellä öljykattilalämmitysjärjestelmä, mitä ainakin välillisesti pidetään vanhanaikaisena. Tämän työn ohessa Kalaholman koulun ala-asteelle suunniteltiin Ilmavesilämpöpumppu- kattilahybridilämmitysjärjestelmä asiakkaan toimesta. Järjestelmän tavoitteena on pienentää ala-asteen öljynkulutusta, sekä mahdollisesti myös öljyn käytöstä aiheutuvia hiilidioksidipäästöjä. Tässä työssä koulurakennus mallinnetaan käyttäen MagiCAD-Room, sekä IDA-ICE-ohjelmistoa. Mallinuksen pohjalta laskettiin vuosittainen säästö kohteessa, sekä päästövähennykset. Säästöjen pohjalta investoinnista tehtiin kannattavuuslaskelma käyttäen kahta menetelmää: takaisinmaksu- sekä nykyarvomenetelmää. Rakennuksen mallinnuksen pohjalta saatujen säästöjen, sekä kannattavuuslaskelmien perusteella järjestelmä osoittaut, Hybrid heating technology is an alternative environmentally friendly energy production system in buildings where the usage of local energy production is possible and feasible. The benefits of hybrid heating technology are its controllability and adjustability plus the possibility for full independent energy production. Modelling hybrid systems is a vital part before installing any new systems. Modelling should always be done to an individual building using variables that are distinctive to the location and for purpose the building is used. Whether the building modeled is new or old one should first make sure that the model is realistic and gives realistic output before analyzing any hybrid systems. The thesis in this work is to insect the usage of hybrid heating systems on a building scale. The research is done in concert with LVI-engineering office Vahvacon Oy. The case study in this thesis is the Kalaholma elementary school in Pori Finland. Kahalolma elementary is set to be demolished since city of Pori is redefining its school network. One of the reasons for demolition is the general need to renew schools. Kalaholma elementary is using an oil burner as a heat source which is thought at least indirectly as an old-fashioned system. In junction with this study designs for air-to-water heat pump and boiler hybrid system was designed ordered by the school. The system is hoped to diminish the oil consumption in the school and possibly reduce the CO2 emissions. In this study the school building is modeled using MagiCAD-Room and IDA-ICE softwares. Based on the modelling the annual savings in the school were calculated with the emission reductions. Based on the savings LCC calculations for the investment were conducted using two methods: the buyback and net present value method. Based on the analyzed methods the designed systems had a buyback time of 2 -3 years making it highly profitable.
- Published
- 2019
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