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"This short book deals with the mathematical modeling of jets impinging porous media. It starts with a short introduction to models describing turbulences in porous media as well as turbulent heat transfer. In its main part, the book presents the heat transfer of impinging jets using a local and a non-local thermal equilibrium approach."

"Engineers and scientists alike will find this book to be an excellent introduction to the topic of porous materials, in particular the three main groups of porous materials: porous metals, porous ceramics, and polymer foams. Beginning with a general introduction to porous materials, the next six chapters focus on the processing and applications of each of the three main materials groups. The book includes such new processes as gel-casting and freeze-drying for porous ceramics and self-propagating high temperature synthesis (SHS) for porous metals. The applications discussed are relevant to a wide number of fields and industries, including aerospace, energy, transportation, construction, electronics, biomedical and others. The book concludes with a chapter on characterization methods for some basic parameters of porous materials. "

"Meningkatnya luas daerah yang ditutupi oleh perkerasan dengan pembangunan permukiman seperti halnya di perkotaan dapat mengakibatkan waktu berkumpulnya air menjadi jauh lebih pendek, sehingga akumulasi air hujan yang terkumpul melampaui kapasitas drainase yang ada. Dengan berkurangnya kesempatan air hujan berinfiltrasi ke dalam tanah, maka limpasan permukaan air hujan akan menimbulkan genangan bahkan banjir pun dapat terjadi pula.Dalam upaya mengantisipasi hal tersebut, maka diperlukan penerapan mengenai drainase permukiman yang berwawasan lingkungan, seperti pembuatan perkerasan beton lulus air (porous concrete), sebatas untuk konstruksi non structural seperti parkir kendaraan, trotoar, lapangan, dll. Cara membuat beton lulus air (porous concrete) semuanya tergantung pada adanya rongga udara dalam agregat atau pembentukan rongga udara dalam beton dengan faktor penting penyeragaman gradasi agregat yang digunakan.Perkembangan mutakhir yang menjanjikan saat ini adalah penggunaan abu terbang sepenuhnya sebagai pengganti semen portland lewat proses yang disebut polimerisasi anorganik (geopolimer). Kegunaan abu terbang pada sejumlah proyek infrastruktur selain lebih ramah lingkungan, mengurangi jumlah energi yang diperlukan karena berkurangnya pemakaian semen portland, lebih awet, lebih murah, dan bahan ini juga tetap menunjukkan perilaku mekanik yang memuaskan. Diharapkan dari pembuatan beton lulus air (porous concrete) ini selain dapat menyerap air dengan cepat juga memiliki kekuatan mekanik yang sama dengan beton pada umumnya.

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The increasing of vast region that covered by pavement with settlement development as does at urban affairs can cause time gather it water be much shorter, so that rainwater accumulation that gathered to exceed existing drainage capacity. With decrease it to chance rainwater infiltration into soil, so rain water level will evoke pool even flood even also can happen also.

In the effort anticipate the mentioned, so need applications hits settlement drainage with vision of environment, like maker pavement concrete passes water, limit of for construction non structural like vehicle parking, trottoir, field, etc. manner makes concrete passes water all depend on air hole existence in aggregate or air hole formation in concrete with aggregate gradation standardization important factor that is used.

Very latest development promise in this time fly ash use thoroughly in the place of cement portland via process that called inorganic polymerize (geopolymer). Fly ash use flies in amount of infrastructure project besides environment friendlier, decrease energy that need because decrease it cement use portland, durableer, cheaper, and this ingredient also permanent show mechanical behaviour. Supposed from concrete maker pass water this besides can absorb water swiftly has also mechanical strength equal to concrete in general."

"Membran matriks campuran (MMC) merupakan material komposit yang terbuat dari polimer yang ditambahkan dengan material pengisi. MMM banyak digunakan dalam proses pemisahan gas, seperti pemisahan gas CO2 dari N2. Akan tetapi, MMM yang diisi dengan padatan berpori pada umumnya tidak memiliki permeabilitas dan selektivitas secara bersamaan, yang dalam hal pemisahan gas, peningkatan permeabilitas gas pada membran menyebabkan selektivitas gas berkurang. Oleh sebab itu banyak penelitian dilakukan untuk mencari cara dalam meningkatkan kinerja MMM.

"Contents :- Introduction - Chapter 1: React to change—take a breath and wait - Chapter 2: Understand change—position yourself to win - Chapter 3: Fight or flight—decide on your strategy - Chapter 4: It’s not just you—manage your worry - Chapter 5: You’re looking good—attitude matters - Chapter 6: Get over it—communicate “I’m on board” - Chapter 7: Get some political savvy—play the game well - Chapter 8: Make it a career positive—find opportunities amid the chaos - Chapter 9: Don’t let your guard down—prepare for the next change - Chapter 10: Conclusion—lessons in change - Appendix - About the author - Index"

"A greater heat load due to the miniaturization of electronic products causes the need for a new cooling system that works more efficiently and has a high thermal capacity. A synthetic jet is potentially useful for the cooling of electronic components. This paper reports the results of our experimental studies and the influence of orifice shape for Impinging Synthetic Jet cooling perfomance. The effect of shape of the orifice of an impinging synthetic jet assembly on the apparatus cooling of a heated surface is experimentally investigated. It will be seen that the characteristics of convective heat transfer will occur by moving the piezoelectric membrane. The prototype of the synthetic jet actuator is coupled with two piezoelectric membranes that operate by 5 volt electrical current and create a sinusoidal wave. The orifice shapes considered are square and circular. The results show the significant influence of orifice shape and sinusoidal wave frequencies on the heat transfer rate that were obtained. The temperature drop with a square orifice is found to be larger than that with circular shapes. A square orifice has a larger covered area if compared to the circular orifice at the same radius, thus resulting in a larger entrainment rate that leads to an increase of heat transfer performance."

"The authors discuss several techniques for artificial representation of porous. The book also discusses with mass transport processes in the porous media which are further strengthen by experimental validation and specific technological applications. This book makes use of state-of-the-art techniques for the modeling of transport processes in porous structures, and considers of realistic sorption mechanisms. It the applies advanced mathematical techniques for upscaling of the major quantities, and presents the experimental investigation and application, namely, experimental methods for the measurement of relevant transport properties."