Determine the (Tm) melting temperature of isolated DNA protocol

AIM

Determine melting temperature of the isolated DNA.

principle- 

samsung galaxy note 8 price and specification

flag-ship model of samsung industry after a long time.

samsung launch New mobile -- Samsung Glaxay Note 8. Much awaited mobile. 

and the final price of samsang galaxy note 8 is approx- 69,000 Rupees only as compare to other iphone new flagship model this is much better mobile.

specification of samsang galaxy note 8

1. Size- 6.3 inch display with 1440*2982 resolution with 521 ppi. super Amoled display.

2. android system- nouget (7.00)

3. better life not good according to size of mobile only 3300Amh

4.sound is good 

5.camera- 12 MP back and front- 8 MP is good for selfy.

6.processer is snepdragon-835, octacore with 6 GB RAM.

7. hybride slot for sim and microsd card. internal memory 64GB.

Microbiology Image which will blow your mind

1.

To measure the dimensions of microorganisms with the help of a microscope.

Aim:

    measurement of the dimension of any microorganism, with the help of a light microscope.

Principal: 

Microorganisms are microscopic objects that are visible only with the help of a microscope.  Sometimes it is necessary to measure its dimensions (length breadth and diameter) for its identification process. But, determination of the size of a microorganism is not an easy process. Micrometry refers to the measurement of dimensions of the desired microorganisms under a microscope which uses two micro-scales known as ‘micrometers’. At first, the diameter of the microscopic field must be established with the help these micrometers namely ocular micrometer and stage micrometer. Ocular micrometer with microscopic graduations etched on their surfaces is a circular glass disc that fits into the circular shelf inside the eyepiece of the microscope. It has 100 equally spaced divisions marked as 0 to 10. Depending on the objective being used, the distance between these graduations will vary that determines the size of the field. The other micrometer, stage micrometer is clipped to the stage of the microscope.  In the centre of the stage micrometer a known 1mm distance is etched into100 equally spaced divisions making each division equals 0.01 mm or 10 µm.

Calibration

With respect to the required objective, the graduations on the ocular microscope are calibrated against the standard graduations on the stage micrometer. Hence the graduations on both micrometers gets superimposed each other.

Calibration steps

• Rotate the ocular lens.
• Determine the number of ocular divisions per known distance on the stage micrometer.

      Calibration and use of the ocular micrometer (Adapted from Lab manual of Microbiology, Cappucino)

Calculation

Calibration factor for One division on ocular micrometer (in mm)  = (Known distance between two lines on stage micrometer) /(Number of divisions on ocular micrometer)

After calibration, the ocular micrometer measures the size of various microbes including its length, breadth, and diameter. First count the number of spaces occupied by the organism. Then multiply this number by the calculated calibration factor. This value indicates the length of the organism. It can also be used to find out organism’s breadth and diameter. 

Application

Helps to determine the sizes of different microorganisms including bacteria, protozoa and yeast. 

Biology Expert Since 1990

my first post on Google blog.


simple connect with us, why ...?  because there are so many thing which you think hard and complicated, and you may find trouble in solving problem related to biology. all question answer here. so don't worry. i'm here to help you.

let me know your queries question in comment box.