A dial tone is the telephony signal sent by a telephone exchange, It indicates that the exchange is working.
karen appreciate your answer, but I need that detection be only with the Smartphone devices's
Hi! I would want to know if I can use acetic acid with an ELITE WAX Perkin Elmer column for Gas Chromatography. This column has a polyethylene glycol phase, but I can't find the manual to check...
22 February 2021 730 2 View
I need to design an spiral heat exchanger, buy I don't know what reference or bibliography (preferably a book) should I consult in order to get an updated and reliable methodology related with...
14 February 2021 7,910 3 View
Hello everyone, Has anyone try to culture the normal prostate RWPE-1 cell line in RPMI medium supplemented with foetal bovine serum? There's some articles available but neither describe details...
08 February 2021 6,455 1 View
Hi, I've been searching for a NMR Handbook with 29Si chemical shifts information but I can't find one. Also I've tried to find an online database with that kind of info but I have no lucky. Can...
02 February 2021 307 3 View
Hi, I need to find the correct media to make my positive charge NPs stable in an aqueous media. I have tried different solutions at different pH but the zeta potential does not increase more than...
21 January 2021 6,490 6 View
We are investigating the acceptance of jellyfish-based food dishes in Latin America. If you are interested in the topic, please fill out the anonymous survey at the following link. Thanks in...
06 December 2020 4,266 2 View
Hello, everybody. I would like to apply machine learning techniques to clinical data of patients with Covid19. However, I can not find any clinical database of Covid patients, do you know any...
02 December 2020 706 8 View
Dear all, I have right now a problem with measuring the charge mobility of different polymers. I have built different types of thin layers OLEDs using different thickness types of polymers. In...
01 December 2020 5,673 4 View
Dear all, Hope you are safe. I would like to know what is the best reliability index to describe. I'm using Psych package and I assume that I am a low-intermediate level of R user. I conduct a...
05 November 2020 7,278 1 View
I received a bottle of PMMA in solution with no information about which solvent was used, so I started using acetone to dilute the original solution. I had not experienced any consequences or...
03 November 2020 4,065 4 View
I did sds page to determine the difference in protein expression between 3 types of vaccine , but i don't have scanner or densitometer available. . so i wonder if there is a software to analyze...
02 March 2021 6,270 3 View
Hi everyone, I'm researching about mobile learning in higher education. Due to the small number of the students in the semesters, I cannot have a experimental and control group together. I'm...
22 February 2021 3,653 11 View
Hi, I am working on a problem that involves multiple smartphones/tablets. All devices are playing the same sound with synchronization difference up to +- 5ms. Now, there is an echo issue and I...
02 February 2021 5,929 3 View
I would like to modulate and demodulate a binary stream of data at 128kbps baud rate using BFSK or N-FSK with carrier freq. of around 10 MHz. I have the following questions? 1) What is the...
12 January 2021 4,497 4 View
Both Jakes and Gaussian models are used to characterize the power spectral densities of mobile communication channels.
11 January 2021 759 3 View
Hi all Can anyone give me some research papers which have shown behavioral a behvaioural intention leads to actual uses i.e. adopted full TAM model in the context of mobile wallet, mobile...
30 December 2020 7,221 4 View
The phone have 'Head SAR' of 0,527 W/kg, and I give exposure to male Mus Musculus 3G (2100 MHz) and 4G (1800MHz) each group for 1 hour per day for 30 day. Is the result will be the same in human?...
26 December 2020 2,475 3 View
I am working on a Turbo encoder decoder system for DVB. Wanted to puncture turbo code in encoder. I am using comm.TurboEncoder object/function in Matlab. Is there an option or way to get punctured...
22 December 2020 5,069 2 View
21 December 2020 9,650 3 View
Hello! We are conducting a study that practically implemented a combination of different learning approaches to foster systems thinking competence in the context of sustainability and in a...
17 December 2020 6,554 2 View