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A pH meter is an electronic device that measures the pH (degree of acidity or alkalinity) of a liquid (there is a particular electrode that measures the pH of semi-solid materials).
Wijaya, Suhdi, Growing Media Combination Improve Plant Growth and Results of Eggplant (Solanum melongena L) in Hydroponic Culture Duck Bucked System, Gontor AGROTECH Science Journal. 5 (2019) 127-149.

(18) On account of the hourly values, Te(t), which can be fitted wave function, as follows: Wuhan: (19) Kunming: (20) Haerbin: (21) Huhehaote: (22) Temperature Difference Heat Transfer Air-Conditioning Load On the base of the harmonic response method, the unsteady heat transfer gain at the t moment may be evaluated from W (23) where we define the equivalent temperature deference θ as (24) The heat transfer attenuation,, is given by (25) And the heat transfer delay time: (26) The symbol, R denotes the thermal resistance of each layer materials
Journal of Electric Power, 2013, 28(5): 391-395
Beijing: Science Press, 2008.

Advanced Materials Research, 2012, 354: 1068-1072
International Journal of Electrical Power & Energy Systems, 2013, 45(1): 331-339
Soft Science, 2010, 24(11): 32-37(in Chinese).

Within the aerosol which was composed of the same material, the amount of fluorescent material was linear with particle size, so we can introduce the concept of relative fluorescent intensity (RI) to eliminate measuring error caused by interference of size.
Journal of Fluorescence 13(6): 489-493
Science 301(5630): 213-215

The results of the study can be summarized as the follows: The research was to study the favorable conditions for face milling on coconut wood by computer numerical controlled milling machine to find out the values of surface roughness of coconut wood materials for furniture products.
References [1] Siripen Supadarattanawong and Supasit Rodkwan, An Investigation of the Optimal Cutting Conditions in Parawood (Heavea Brasiliensis) Machining Process on a CNC Wood Router, Kasetsart Journal (Natural Science), 40 (5), pp. 311-319, (2006)

The work piece material is mild steel (Ck45) and the tool material has a carbide tip.
Balic, Selection of cutting conditions and tool flow in flexible manufacturing system, The international journal for manufacturing science & technology 2 (2000) 101-106

Gene Delivery Systems: In a gene therapy treatment technique, the genetic materials (DNA or RNA) are delivered as pharmaceutical agents to help target cells to recover missing or defective genes and generate their own therapeutic proteins with minimal toxicity to cure a disease.
Then the lysosomal enzymes help digestion of the material.
It can also be used to determine cytotoxicity of potential medicinal agents and other toxic materials, since those agents would result in cell toxicity which will lead to metabolic dysfunction and, therefore, can be used as a measure for anticancer activity [47].
CNTs are such materials that have been poised to revolutionize a variety of biomedical applications.
Singh, Functionalized carbon nanotubes: biomedical applications, International journal of nanomedicine 7 (2012) 5361-5374

Ishlinsky Institute for Problems in Mechanics of the Russian Academy of Sciences 119526 Moscow, pr.
A wide range of abrasive materials is used in the CMP processes.
Note, that to estimate the crack opening one can neglect by a difference of deformation properties of contacting materials loading to some tangential forces.
[12]　K.Smehalin, D.Fertig, Microscale dishing effect in a chemical mechanical planarization process for trench isolation, Journal of Electrochemical Society. 143 12 (1996) 1281-1283
Steigerwald, S.P.Murarka, R.J.Gutman, Chemical-mechanical planarization of microelectronic materials, John Wiley & sons, Inc., New York, 1997

Materials and Methods Virus Strain and Sequence.
Acknowledgement The research was supported by China 973 program (2011CB111606), China Agricultural Research System (CARS-43-8), the Changjiang Scholars and Innovative Research Team of Sichuan Agricultural University (PCSIRT0848), and National science and technology support program for agriculture (2011BAD34B03) An-chun Cheng and Ming-shu Wang are the corresponding authors at: Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, & Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University,Wenjiang, Chengdu city, Sichuan, 611130, P.R.China & Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, 46# Xinkang Road, Yucheng district, Yaan 625014, China.
Xu, et al., Studies of ultrastructure of duck enteritis virus CHv virulent strain, Chinese Journal of Virology 23 (2007) 202-205

Despite the benefits for communal property, the situation with introduction of energy saving technologies in higher educational institutions of state ownership, directly subordinated to the Ministry of Education and Science of Ukraine or other profile ministries, remains unclear.
Main reasons are the use of outdated materials and technologies for the construction of buildings.
[2] Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings [E-resource] / The European Parliament and the Council of theEuropean Union // Official Journal of the European Union. – 2010. – 18.6. – P.