Vydavatelia LAP Lambert Academic Publishing

Cover for Henry Karanja · The Ecological Integrity of the Tsavo River and Mzima Springs, Kenya: Macroinvertebrate Assemblages As Bioindicators Along a Protected Area Gradient in the Tsavo River Watershed (Paperback Book) (2012)

The Ecological Integrity of the ... (2012)

Cover for Rabia Bilal · Quality of Service Issues and Challenges of Mobile Sensor Networks: Medium Access Control Protocols (Paperback Book) (2012)

Quality of Service Issues and Ch... (2012)

Cover for Joseph Goodman · A Technical and Economic Evaluation of Co2 Reduction Technologies: Clean Energy Options (Paperback Book) (2012)

A Technical and Economic Evaluat... (2012)

Cover for Werner Benger · Tensorfield Visualization on the F5 Data Model: Visualization of General Relativistic Tensor Fields Via a Fiber Bundle Data Model (Paperback Book) (2013)

Tensorfield Visualization on the... (2013)

Cover for Evgeniya Frantsina · Prognozirovanie Resursoeffektivnosti Neftepererabatyvayushchikh Proizvodstv: Sovremennyy Uroven' Intellektualizatsii Npz (Paperback Book) [Russian edition] (2012)

Russian edition

Prognozirovanie Resursoeffektivn... (2012)

Evgeniya Frantsina

Cover for Mitharwal V S · Vegetative Growth Performance of Medicinal Plants Through Use of Pgrs (Paperback Book) (2015)

Vegetative Growth Performance of... (2015)

Cover for Natal'ya Fil'chakova · Monitoring Riska Otmyvaniya Dokhodov - Povyshenie Transparentnosti Banka (Paperback Book) [Russian edition] (2014)

Russian edition

Monitoring Riska Otmyvaniya Dokh... (2014)

Natal'ya Fil'chakova

Cover for Zahid Iqbal Khan · Bio-ecology of Pheasant Tailed Jacana (Paperback Book) (2013)

Bio-ecology of Pheasant Tailed J... (2013)

Zahid Iqbal Khan

Cover for Valeriy Kozlovskiy · Reklama - Universaliya Kul'tury (Paperback Book) [Russian edition] (2014)

Russian edition

Reklama - Universaliya Kul'tury (2014)

Valeriy Kozlovskiy

Cover for Indraneel Banerjee · Case Oriented Approach to Pharmacology (Paperback Book) (2014)

Case Oriented Approach to Pharma... (2014)

Indraneel Banerjee

Cover for Mohamed Megahed · Diversity of Microorganisms: Prokaryotic and Eukaryotic Microorganisms: Evolutionary and Functional Diversity of Microorganisms (Paperback Book) (2012)

Diversity of Microorganisms: Pro... (2012)

Mohamed Megahed

Cover for Pijush Samui · Artificial Intelligence in Civil Engineering (Paperback Book) (2012)

Artificial Intelligence in Civil... (2012)

Cover for Ramita Verma · Asset - Liability Management in Banking Sector: a Case Study of Indian Banks (Paperback Book) (2012)

Asset - Liability Management in ... (2012)

Cover for Makram Krit · Design Process Improvement Through Six Sigma Approach: a Sample of Case Studies (Paperback Book) (2012)

Design Process Improvement Throu... (2012)

Cover for Ol'ga Strelova · Natsional'no-regional'nyy Komponent Istoricheskogo Obrazovaniya V Rossii: Opyt,problemy Proektirovaniya I Realizatsii,strategii Razvitiya V Nachale Xxi Veka (Paperback Book) [Russian edition] (2012)

Russian edition

Natsional'no-regional'nyy Kompon... (2012)

Cover for Vladimir Kuznetsov · Opredelenie Pryamolineynoy Orbity: Zadacha Dvukh Tel (Paperback Book) [Russian edition] (2014)

Russian edition

Opredelenie Pryamolineynoy Orbit... (2014)

Vladimir Kuznetsov

Cover for Omorog Challiz · Stana: a Decision Support System for Supermarkets (Paperback Book) (2015)

Stana: a Decision Support System... (2015)

Cover for Tamara Vladimirovna Grigor'eva · Matematicheskie Metody Modelirovaniya Finansovogo Sostoyaniya Predpriyatiya: Monografiya (Paperback Book) [Russian edition] (2012)

Russian edition

Matematicheskie Metody Modelirov... (2012)

Tamara Vladimirovna Grigor'eva

Cover for Mohsen Fathi · Conformally Invariant Equations for Graviton: an Application of Dirac's Six Cone Method for Massless Particles (Paperback Book) (2012)

Conformally Invariant Equations ... (2012)

Cover for Zakariyya Olanrewaju · Enforcement of Economic and Financial Crimes Law in Nigeria (Paperback Book) (2014)

Enforcement of Economic and Fina... (2014)

Zakariyya Olanrewaju

Cover for Pradip Kumar Biswas · Sands of the Brahmaputra River Basin: Identification of Valuable Heavy Minerals (Vhm) in the Sands of the Brahmaputra River (Paperback Book) (2012)

Sands of the Brahmaputra River B... (2012)

Pradip Kumar Biswas

Cover for Ayyoub Akbari Moghanjoughi · Route Optimization Security in Mobile Ipv6 Networks: Protocols and Implementation (Paperback Book) (2012)

Route Optimization Security in M... (2012)

Ayyoub Akbari Moghanjoughi

Cover for Nailya Mingazova · Kategoriya Chisla Imen Sushchestvitel'nykh V Angliyskom Yazyke: Monografiya (Paperback Book) [Russian edition] (2012)

Russian edition

Kategoriya Chisla Imen Sushchest... (2012)

Nailya Mingazova

Cover for Thembinkosi Ncube · School Adolescent Violence: an Association with Home and School Attachment (Paperback Book) (2012)

School Adolescent Violence: an A... (2012)

Thembinkosi Ncube

Cover for Shegaw Firiew · Improving Transmission Line Loadability Using Facts Controllers: a Case Study on Bahirdar-mota-debremarkos 230 Kv Line, Ethiopia (Paperback Book) (2012)

Improving Transmission Line Load... (2012)

Cover for Aleksey Ponomarev · Teoreticheskie Kontseptsii Makroekonomicheskogo Ravnovesiya: Genezis Ekonomicheskikh Vzglyadov (Paperback Book) [Russian edition] (2012)

Russian edition

Teoreticheskie Kontseptsii Makro... (2012)

Aleksey Ponomarev

Cover for Daniel Wallinder · Think of the Children in Africa: a Minor Field Study in the Gambia on the Views of Food Aid Recipients on the Responsibility of Food Aid Donors (Paperback Book) (2012)

Think of the Children in Africa:... (2012)

Daniel Wallinder

Cover for Silvia Torsi · Affordances and Children: when Culture Lives Through Artifacts (Paperback Book) (2012)

Affordances and Children: when C... (2012)

Cover for B. Rajasekhar Reddy · Effect of Industrial Effluents on Soil Microbial and Enzyme Activities: an Experimental Approach to Study the Effect of Cotton Ginning Industry Effluents on Soil Microbes and Enzyme Activities (Paperback Book) (2012)

Effect of Industrial Effluents o... (2012)

B. Rajasekhar Reddy

Cover for Rakesh Kumar Singh · Biological Control of Nematodes by Fungus Nematoctonus Robustus (Paperback Book) (2014)

Biological Control of Nematodes ... (2014)

Rakesh Kumar Singh

Cover for Leonid Borisovich Sokolinskiy · Modelirovanie Ierarkhicheskikh Mnogoprotsessornykh Sistem Baz Dannykh: Razrabotka Modeli Mul'tiprotsessorov Baz Dannykh (Paperback Book) [Russian edition] (2012)

Russian edition

Modelirovanie Ierarkhicheskikh M... (2012)

Leonid Borisovich Sokolinskiy

Cover for D. Gent Dotson · Educational Interventions and Ageism Among Counseling Students: a Look at What Can Be Done with a Short Term Intervention (Paperback Book) (2012)

Educational Interventions and Ag... (2012)

Cover for Srikumar P. S. · Duplication & Characterization of Mycobacterium Tuberculosis (Paperback Book) (2012)

Duplication & Characterization o... (2012)

Cover for Vandana Gade · Recent Advances in Composite Resins (Paperback Book) (2014)

Recent Advances in Composite Resins (2014)

Cover for Sanjeeda Nazneen · Elementary Free Groups: Topics in Free Groups (Paperback Book) (2012)

Elementary Free Groups: Topics i... (2012)

Sanjeeda Nazneen

Cover for Andrey Tikhomirov · Mozg: Novye Otkrytiya: Poslednie Nauchnye Razrabotki (Paperback Book) [Russian edition] (2012)

Russian edition

Mozg: Novye Otkrytiya: Poslednie... (2012)

Andrey Tikhomirov

Cover for S.v.k. Varma · Heat Transfer in Mhd Fluid Flow: Heat Transfer in Hydromagnetic Flow of Viscous Fluid Through a Non-homogeneous Porous Medium (Paperback Book) (2012)

Heat Transfer in Mhd Fluid Flow:... (2012)

Cover for Irina Zaikanova · Geoekologiya Regionov: Problemy,otsenka,resheniya (Paperback Book) [Russian edition] (2014)

Russian edition

Geoekologiya Regionov: Problemy,... (2014)

Irina Zaikanova

Cover for Naresh K. Prajapati · Asymmetric Oxidation (Paperback Book) (2014)

Asymmetric Oxidation (2014)

Naresh K. Prajapati

Cover for Wafula Muyila · Traditional African Communalism and the Neo-communal Spirit in Africa: Analyzing the Legacy of Communalism in Post- Independent Africa (Paperback Book) (2012)

Traditional African Communalism ... (2012)

Cover for Igor' Zhilkin · Reyting Promyshlennykh Predpriyatiy: Monografiya (Paperback Book) [Russian edition] (2012)

Russian edition

Reyting Promyshlennykh Predpriya... (2012)

Cover for Michael Klaehn · Sourcing Mature Workers Amidst Changing Workforce Demographics: a Practicum at the Aarp Workforce Issues Taskforce (Paperback Book) (2013)

Sourcing Mature Workers Amidst C... (2013)

Cover for Natal'ya Tsareva · Bobovye V Tekhnologii Vzbivnykh Produktov Pitaniya (Paperback Book) [Russian edition] (2013)

Russian edition

Bobovye V Tekhnologii Vzbivnykh ... (2013)

Natal'ya Tsareva

Cover for George Kimathi Kobia · Community Based Water Management: Practical Lessons from Timau Wua: Water Management Through Water User Associations (Paperback Book) (2014)

Community Based Water Management... (2014)

George Kimathi Kobia

Cover for Md. Mukhlesur Rahman · Technology in Library Operations and Services: Experience of Public University Libraries in Bangladesh (Paperback Book) (2012)

Technology in Library Operations... (2012)

Md. Mukhlesur Rahman

Cover for Nagahanumaiah Nagahanumaiah · Dynamic Health Monitoring in Micro Turning Process: a Multi-sensory Approach (Paperback Book) (2012)

Dynamic Health Monitoring in Mic... (2012)

Nagahanumaiah Nagahanumaiah

Cover for Russell J. Cox · Biosynthesis of Polyketide Natural Products in Microorganisms: Studies of Griseusin, Fusarin C and Trichothecenes (Paperback Book) (2012)

Biosynthesis of Polyketide Natur... (2012)

Cover for Tan Thareerach · The Changing in Food Habits of Indian Students in the UK (Paperback Book) (2013)

The Changing in Food Habits of I... (2013)

Cover for Arthur Molenaar · Gacaca: Grassroots Justice After Genocide: the Key to Reconciliation in Rwanda? (Paperback Book) (2012)

Gacaca: Grassroots Justice After... (2012)

Arthur Molenaar

Cover for Ol'ga Dubrovskaya · Kul'turnaya Missiya Parkov: Monografiya (Paperback Book) [Russian edition] (2012)

Russian edition

Kul'turnaya Missiya Parkov: Mono... (2012)

Ol'ga Dubrovskaya

Cover for Oghenevwarho Ojakovo · The Impacts of Nta's Musical Broadcast on the Rebranding Nigeria Image (Paperback Book) (2014)

The Impacts of Nta's Musical Bro... (2014)

Oghenevwarho Ojakovo

Cover for Thonangi Raghuram Sandeep · Modified Method of Prestressing Steel Trusses by Inducing Lack of Fit: a Novel Method of Optimizing / Economizing Steel Truss Design (Paperback Book) (2012)

Modified Method of Prestressing ... (2012)

Thonangi Raghuram Sandeep

Cover for Leyli Bayramova · Kontseptual'naya Metafora: Kontseptual'naya Metafora Kak Peredacha Informatsii Po Kanalu Avtor-chitatel' (Na Primere Romana "Nedelya V Dekabre" S.folka) (Russian Edition) (Paperback Book) [Russian edition] (2012)

Russian edition

Kontseptual'naya Metafora: Konts... (2012)

Leyli Bayramova

Cover for Nelson Tabe Arrey · Ethiopian Commodity Exchange As a Model: for Panafrican Commodity Exchange and Other Emerging Economies (Paperback Book) (2012)

Ethiopian Commodity Exchange As ... (2012)

Nelson Tabe Arrey

Cover for Naveed Chaudhry · The Discourse of the 21st Century Peace Protests: the Language, Context and Semiotics of the 21st Century Peace Protests (Paperback Book) (2012)

The Discourse of the 21st Centur... (2012)

Naveed Chaudhry

Cover for Valeriy Khmara · Tekhnologicheskoe Proektirovanie Sistem Otbora I Dostavki Prob Na Analiz (Paperback Book) [Russian edition] (2014)

Russian edition

Tekhnologicheskoe Proektirovanie... (2014)

Cover for Poonam M. Lohana · E-banking: Prospects and Problems (Paperback Book) (2014)

E-banking: Prospects and Problems (2014)

Poonam M. Lohana

Cover for Jasim Uddain · Fertilizer Management of Broccoli (Paperback Book) (2014)

Fertilizer Management of Broccoli (2014)

Cover for Zakhra Aminiyan · Metodika Raboty Nad Znacheniyami Tvoritel'nogo Padezha V Persidskom Yazyke: Metodika Raboty Nad Obstoyatel'stvennymi Znacheniyami Tvoritel'nogo Padezha V Persidskoy Auditorii (Paperback Book) [Russian edition] (2013)

Russian edition

Metodika Raboty Nad Znacheniyami... (2013)

Zakhra Aminiyan

Cover for Priyanka Moryani · Therapeutic Potential of Cooking: Leisure Activities and Well-being (Paperback Book) (2014)

Therapeutic Potential of Cooking... (2014)

Priyanka Moryani

Cover for Dr Manjulatha Khanapur · Dodonaea Viscosa Flavonoid Rich Plant and Its Biological Potential.: Different Parts of Plant Have Variation in Antimicrobial and Antioxidant Potential. (Paperback Book) (2012)

Dodonaea Viscosa Flavonoid Rich ... (2012)

Dr Manjulatha Khanapur

Cover for Bijay Gyawali · Filters for Stormwater Treatment (Paperback Book) (2012)

Filters for Stormwater Treatment (2012)

Cover for Yuliya Olegovna Tolstykh · Analiz Effektivnosti Energosberegayushchikh Proektov V Zhilishchnoy Sfere: Realizuemykh V Ramkakh Kapital'nykh Remontov (Paperback Book) [Russian edition] (2012)

Russian edition

Analiz Effektivnosti Energosbere... (2012)

Yuliya Olegovna Tolstykh

Cover for Tessema Bashaye · Mechanism of Xanthine Oxidase and 6-mercaptopurine: Theoretical Studies (Paperback Book) (2012)

Mechanism of Xanthine Oxidase an... (2012)

Tessema Bashaye

Cover for Pooi See Lee · Power Transducer and Piezoelectric Pump: Modeling, Simulation, Design and Characterization (Paperback Book) (2012)

Power Transducer and Piezoelectr... (2012)

Cover for Jilson Zimuto · The Effectiveness of Marketing Mix Elements: Product, Price, Place and Promotion on Retail Shops Performance in Zimbabwe (Paperback Book) (2012)

The Effectiveness of Marketing M... (2012)

Cover for Evgeniy Polyakov · Etnopoliticheskie Konflikty Na Severnom Kavkaze: Prichiny, Manifestatsiya, Posledstviya (Paperback Book) [Russian edition] (2012)

Russian edition

Etnopoliticheskie Konflikty Na S... (2012)

Evgeniy Polyakov

Cover for Milap Dalal · Interface Ic Design for Mems Resonant Devices: Low Noise, Low Power Interface Circuits and Systems for High Frequency Resonant Micro-gyroscopes (Paperback Book) (2012)

Interface Ic Design for Mems Res... (2012)

Cover for Kripasindhu Chaudhuri · Applied Bioeconomic Analysis (Paperback Book) (2013)

Applied Bioeconomic Analysis (2013)

Kripasindhu Chaudhuri

Cover for Nasr Nada · Il-10 Gene Polymorphism & Response to Interferon in Hcv Patients (Paperback Book) (2015)

Il-10 Gene Polymorphism & Respon... (2015)

Cover for Shyamsunder Sable · Effect of Premenstrual Stress on Various Parameters: Study of Premenstrual Stress (Paperback Book) (2012)

Effect of Premenstrual Stress on... (2012)

Shyamsunder Sable

Cover for Ghaleb Abuerreish · Novel Approach for Commercial Baker's Yeast Production: Introducing Carob Fruit As Carbon and Energy Source (Paperback Book) (2012)

Novel Approach for Commercial Ba... (2012)

Ghaleb Abuerreish

Cover for Almgren Daniel · The Relationship Between Internal Branding and Affective Commitment (Paperback Book) (2012)

The Relationship Between Interna... (2012)

Cover for Elena Zamyatina · Sadovo-parkovyy Topos V Russkoy Lirike Pervoy Treti Xix Veka: Issledovanie Semantiki, Funktsional'nykh Elementov I Dinamiki Sadovo-parkovogo Toposa V Russkoy Lirike 1800-1830-kh Gg. (Paperback Book) [Russian edition] (2012)

Russian edition

Sadovo-parkovyy Topos V Russkoy ... (2012)

Elena Zamyatina

Cover for Sanjay Agrawal · Meditation: a Panacea: Healing Body and Mind Through Brahmakumaris Rajayoga Meditation (Paperback Book) (2012)

Meditation: a Panacea: Healing B... (2012)

Cover for Haile Adamu · Pattern Ecological Study of the Woodland Vegetation in Metema Area: Northwestern Ethiopia (Paperback Book) (2012)

Pattern Ecological Study of the ... (2012)

Cover for Vladimir Bogonenko · Pravo Nedvizhimosti: Sravnitel'no-pravovoe Issledovanie (Paperback Book) [Russian edition] (2012)

Russian edition

Pravo Nedvizhimosti: Sravnitel'n... (2012)

Vladimir Bogonenko

Cover for Kamil' Gabdrakhimov · Kriterial'nye Pokazateli Ekologicheskoy Produktivnosti Nasazhdeniy: Na Primere G.ufy (Paperback Book) [Russian edition] (2014)

Russian edition

Kriterial'nye Pokazateli Ekologi... (2014)

Kamil' Gabdrakhimov

Cover for Arcoprovo Mitra · Toll Road Projects in India: Towards a Procurement Model with Suitable Financial De-risking Mechanisms (Paperback Book) (2012)

Toll Road Projects in India: Tow... (2012)

Arcoprovo Mitra

Cover for Alaa Aladdin Abdulhameed · Fabricating Zno / N-si by Chemical Spray Pyrolysis Technique: Tco in the Practical Applications by Chemical Spray Pyrolysis (Csp) (Paperback Book) (2012)

Fabricating Zno / N-si by Chemic... (2012)

Alaa Aladdin Abdulhameed

Cover for -cents-cents-cents-cents-cents-cents-cents-cents -cents-cents-cents-cents-cents-cents -cents-cents-cents-cents-cents-cents-cents-cents-cents-cents-cen (Paperback Book) (2015)

-cents-cents-cents-cents-cents-c... (2015)

Cover for Valeriya Prokhotskaya · Mikrovodorosli V Praktike Biotestirovaniya: Strukturno-funktsional'nye Kharakteristiki Model'noy Populyatsii (Paperback Book) [Russian edition] (2012)

Russian edition

Mikrovodorosli V Praktike Biotes... (2012)

Valeriya Prokhotskaya

Cover for Susanne Aufreiter · Folate Absorption Across the Colon: and the Modulation of Bacterial Folate Synthesis by Diet (Paperback Book) (2012)

Folate Absorption Across the Col... (2012)

Susanne Aufreiter

Cover for Abdelmoneim Khashana · Adrenal Function in Neonates: Discover the Blind Area (Paperback Book) (2012)

Adrenal Function in Neonates: Di... (2012)

Abdelmoneim Khashana

Cover for Krasil'nikov Andrey · Inomarka V Rossii: Zashchita Kartera (Paperback Book) [Russian edition] (2014)

Russian edition

Inomarka V Rossii: Zashchita Kar... (2014)

Krasil'nikov Andrey

Cover for Mateciuc Dumitru · The Monograph of National College "Stefan Cel Mare" Harlau (Paperback Book) (2014)

The Monograph of National Colleg... (2014)

Mateciuc Dumitru

Cover for Eric K. Kabuka · Dating Violence in Kenya: Prevalence,risk Factors and Social Competence for Dating Violence Among Public Technical Institutions Students in Nyanza (Paperback Book) (2012)

Dating Violence in Kenya: Preval... (2012)

Cover for Abeer Al-mashhadany · General Arabic Diagnosing Expert System Shell (Gadess): Design and Implement Shell Systems, Natural Language Understanding (Paperback Book) (2012)

General Arabic Diagnosing Expert... (2012)

Abeer Al-mashhadany

Cover for Qiuning Yang · The Development of Entrepreneurship in China: the Influence of Institutions on Entrepreneurship (Paperback Book) (2012)

The Development of Entrepreneurs... (2012)

Cover for Alireza Tavakolpour-saleh · Applied Electronics for Mechatronic Engineers: First Edition (Paperback Book) (2012)

Applied Electronics for Mechatro... (2012)

Alireza Tavakolpour-saleh

Cover for Aleksandr Kokin · Geokhimicheskoe Kartirovanie S Tsel'yu Otsenki Istochnikov Rudoobrazovaniya: Analiz Istochnikov Rudoobrazovaniya V Ramkakh Geokhimicheskogo Kartirovaniya (Paperback Book) [Russian edition] (2014)

Russian edition

Geokhimicheskoe Kartirovanie S T... (2014)

Aleksandr Kokin

Cover for Vinita Chandak · Microtomy: Microtome and Its Applications (Paperback Book) (2012)

Microtomy: Microtome and Its App... (2012)

Cover for Alexey Tyapukhin · Logistics and Supply Chain Management: a New Sight: Monography (Paperback Book) (2012)

Logistics and Supply Chain Manag... (2012)

Alexey Tyapukhin

Cover for Viktoriya Borisova · Realizatsiya Prava Na Obrashchenie V Sud Obshchey Yurisdiktsii: Predposylki, Usloviya, Pravila (Paperback Book) [Russian edition] (2013)

Russian edition

Realizatsiya Prava Na Obrashchen... (2013)

Viktoriya Borisova

Cover for Wadzanai Kachere · Informal Crossboarder Trade and Poverty Reduction in Southern Africa: Informal Crossborder Trade and Poverty Reduction in Southern Africa Development Community (Sadc). the Case of Zimbabwe (Paperback Book) (2012)

Informal Crossboarder Trade and ... (2012)

Wadzanai Kachere

Cover for Kerli Raaperi · Epidemiology of Bovine Herpesvirus 1 in Estonian Dairy Cattle Herds: Epidemiology, Impact on Herd Health and Control of Bovine Herpesvirus 1 in Estonian Dairy Cattle Herds (Paperback Book) (2012)

Epidemiology of Bovine Herpesvir... (2012)

Cover for Gábor Salamon · Degree-based Spanning Tree Optimization: Approximation Algorithms and Relationship to Graph Vulnerability (Paperback Book) (2012)

Degree-based Spanning Tree Optim... (2012)

Cover for Ashok Bakaya · Bnp in the Diagnosis of Heart Failure in Patients with Acute Dyspnea: Bnp-a Diagnostic Marker in Congestive Heart Failure (Paperback Book) (2012)

Bnp in the Diagnosis of Heart Fa... (2012)

Cover for R. B. Singh · Management of Alternaria Blight in Rapeseed-mustard: Alternaria Blight of Rapeseed-mustard Disease- More Destructive (Paperback Book) (2014)

Management of Alternaria Blight ... (2014)

Cover for Muturi Samuel Mwangangi · Transmission Mode of Banana Streak Virus by Putative Vectors: Dna Isolation Protocol Transmission Mode (Paperback Book) (2012)

Transmission Mode of Banana Stre... (2012)

Muturi Samuel Mwangangi