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| 1 | 采用浸渍硅藻土作为多相催化剂从废植物油中生产生物柴油(英文)显示文摘In this study, biodiesel was produced from waste vegetable oil using a heterogeneous base catalyst synthesized by impregnating potassium hydroxide(KOH) onto diatomite. Response surface methodology based on a central composite design was used to optimize four transesterification variables: temperature(30–120 °C), reaction time(2–6 h), methanol to oil mass ratio(10%–50%) and catalyst to oil mass ratio(2.1%–7.9%). A quadratic polynomial equation was obtained to correlate biodiesel yield to the transesterification variables. The diatomite–KOH catalyst was characterized using X-ray diffraction(XRD), Fourier transform infra-red spectroscopy(FTIR) and a scanning electron microscope(SEM) equipped with an energy dispersive X-ray detector(EDS). A maximum biodiesel yield of 90%(by mass) was obtained. The reaction conditions were as follows: methanol to oil mass ratio 30%, catalyst to oil mass ratio 5%, reaction time 4 h, and reaction temperature 75 °C. The XRD, FTIR and SEM(EDS) results confirm that the addition of KOH modifies the structure of diatomite. During impregnation and calcination of the diatomite catalyst the K2 O phase forms in the diatomite structural matrix and the active basicity of this compound facilitates the transesterification process. It is possible to recycle the diatomite–KOH catalyst up to three times. The crucial biodiesel properties from waste vegetable oil are within the American Standard Test Method specifications. | Edward Modiba Christopher Enweremadu Hilary Rutto | 2015 | Chinese Journal of Chemical Engineering2015，23，1： | 2 |
| 2 | Preparation of bagasse ash/CaO/ammonium acetate sorbent and modelling their desulphurization reaction显示文摘 | Dube G Osifo E Rutto H | 2014 | Clean Technologies and Environmental Policy2014，16，5： | 1 |
| 3 | Biodiesel production from baobab ( Adansonia digitata L.) seed kernel oil and its fuel properties显示文摘 | Edward Modiba Peter Osifo Hilary Rutto | 2014 | Industrial Crops & Products2014，，： | 1 |
| 4 | Effect of am- monium compounds on dissolution rate of South African calcium-based material显示文摘 | RUTTO H SIAGI Z O MBARAWA M | 2009 | Journal of Hazardous Ma- terials2009，168，23： | 1 |
| 5 | Effect of ammonium compounds on dissolution rate of South African calcium-based material显示文摘 | Rutto H Siagi Z Mbarawa M | | 0，，2： | 1 |
| 6 | Combustion, emission and engine performance eharaeteristies of used cooking oil biodiesel : a re- view显示文摘 | Enweremadu C C Rutto H L | 2010 | Renewable and Sustainable Energy Reviews2010，14，9： | 1 |
| 7 | Peach seedling growth in replant and non-replant soils after inoculation with arbuscular mycorrhizal fungi 显示文摘 | Rutto K L Mizutani F | 2006 | Soil Biology & Biochemistry2006，38，： | 1 |
| 8 | Thermo-Mechanical Properties of Urea- Based Pattern Molding Compounds for Investment Casting 显示文摘 | Rutto H Focke W W | 2010 | International Polymer Processing2010，25，1： | 1 |
| 9 | Combustion, emission and engine performance characteristics of used cooking oil biodiesel-A review 显示文摘 | Enweremadu C C Rutto H L | 2010 | Renewable and Sustainable Energy Reviews2010，14，： | 1 |
| 10 | Effect of root-zone flooding on mycorrhizal and non-mycorrhizal peach ( Prunius persica Batsch) seedlings 显示文摘 | Rutto K L Mizutani F Kadoya K | 2002 | Sci Hort2002，94，： | 1 |
| 11 | Effect of ammonium compounds on dissolution rate of South Af- rican calcium-based material显示文摘 | Hillary Rutto Zachariah Siagi Mbarawa M | 2009 | Journal of Hazardous Materials2009，168，： | 1 |
| 12 | Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst显示文摘 | Modiba E Enweremadu C Rutto H | 2015 | ss Chinese Journal of Chemical Engineering2015，1，： | 1 |
| 13 | Peach seedling growth in replant and non- replant soils after inoculation with arbuscular mycorrhizal fungi 显示文摘 | Rutto K L Mizutani F | 2006 | Soil Biology & Biochemistry2006，38，： | 1 |
| 14 | Drivers of early marriage and teenage pregnancy in Kenya and Uganda during COVID-19 lockdown period:A systematic review显示文摘The present study aimed to explore the drivers of early marriage and teenage pregnancy in Kenya and Uganda during COVID-19 lockdown period.A systematic review design was adopted.The major online databases utilized were PubMed,Google Scholar,Uganda and Kenya Ministry of Health repositories,ScienceDirect,and Scopus.Studies that were originating from Kenya and Uganda that were publicly available in electronic format published from March 2020 to March 2022 were used.The thematic analysis identified major concepts that were drivers to the present research problem which were as follows:(1)school closure and(2)loss of income by parents.The COVID-19 containment measures introduced in the two countries were noted as major contributing factors.During the pandemic,lockdown led to school closures which meant the teenagers being idle at home with an increased opportunity to indulge in sexual risk behaviors.Schools have been noted to be a safe place protecting this vulnerable population.However,with their prolonged closure,the teenagers were exposed to sexual predators.Parents lost income,and this might have contributed to early marriages and teenagers’dependency on their sexual partners.Based on the reviewed evidence,the present study furthers the advocacy for the reduction of early marriages and teenage pregnancy,especially in the current COVID-19 pandemic era.The study calls upon the governments to intensify efforts toward the present research problem as the COVID-19 pandemic is eroding the earlier gains made within the region. | Brian Barasa MASABA Rose MMUSI-PHETOE Jacklyne Atieno ODHIAMBO Bernard RONO Jane Wamuyu KABO Damaris MORAA Alex RUTTO John Kennedy MOTURI Thomas Ong’ondo NG’AMBWA Damaris OCHANDA Sammy Diana MAWIA Mary KIPMEREWO Samuel OYUGI Stephenie Lydia OJIAMBO | 2022 | Journal of Integrative Nursing2022，4，4： | 0 |
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