Nmr nuclear magnetic resonance spectroscopyJoel Cornelio
Basics of NMR. Suitable for UG and PG courses.
Includes principle, instrumentation, solvents. chemical shift and factors affecting it. Some problems. resolving agents, coupling constant and much more
In this slide contains instrumentation of Fourier-Transform Nuclear Magnetic Resonance (FT-NMR).
Presented by: P. Venkatesh. (Department of pharmaceutical analysis).
RIPER, anantpur.
Nmr nuclear magnetic resonance spectroscopyJoel Cornelio
Basics of NMR. Suitable for UG and PG courses.
Includes principle, instrumentation, solvents. chemical shift and factors affecting it. Some problems. resolving agents, coupling constant and much more
In this slide contains instrumentation of Fourier-Transform Nuclear Magnetic Resonance (FT-NMR).
Presented by: P. Venkatesh. (Department of pharmaceutical analysis).
RIPER, anantpur.
Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique to observe local magnetic fields around atomic nuclei.
NQR - DEFINITION - ELECTRIC FIELD GRADIENT - NUCLEAR QUADRUPOLE MOMENT - NUCLEAR QUADRUPOLE COUPLING CONSTANT - PRINCIPLE OF NQR - ENERGY OF INTERACTION - SELECTION RULE - FREQUENCY OF TRANSITION - APPLICATIONS
Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique to observe local magnetic fields around atomic nuclei.
NQR - DEFINITION - ELECTRIC FIELD GRADIENT - NUCLEAR QUADRUPOLE MOMENT - NUCLEAR QUADRUPOLE COUPLING CONSTANT - PRINCIPLE OF NQR - ENERGY OF INTERACTION - SELECTION RULE - FREQUENCY OF TRANSITION - APPLICATIONS
Anistropy is an important feature of the materials that needs to be kept in view for processing. The strength of materials may depend on the Anisotropic behavior of the material.
Explaining all the difficult concepts with precise and accurate points, 3D models, animations and smart art graphics.
Principle
The NMR phenomenon
Theory
Precessional frequency (ν)
Chemical shift
Spin-spin interactions
Interpretation of NMR
Chemical shift (δ)
Multiplicity of the signal
Coupling constant
Instrumentation
Fourier NMR
Continuous wave NMR
Applications
Identification testing
Assay of drugs
Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy, is a spectroscopic technique to observe local magnetic fields around atomic nuclei.
Theory of NMR, nuclear magnetic resonance, instrumentation, solvents, chemical shift, photon NMR, spin coupling, coupling constant and applications.
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NMR, principle, chemical shift , valu,13 C, applicationTripura University
Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong, constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field [1]) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus. This process occurs near resonance, when the oscillation frequency matches the intrinsic frequency of the nuclei, which depends on the strength of the static magnetic field, the chemical environment, and the magnetic properties of the isotope involved; in practical applications with static magnetic fields up to ca. 20 tesla, the frequency is similar to VHF and UHF television broadcasts (60–1000 MHz). NMR results from the specific magnetic properties of certain atomic nuclei. Nuclear magnetic resonance spectroscopy is widely used to determine the structure of organic molecules in solution and study molecular physics and crystals as well as non-crystalline materials. NMR is also routinely used in advanced medical imaging techniques, such as magnetic resonance imaging (MRI). The original application of NMR to condensed matter physics is nowadays mostly devoted to strongly correlated electron systems. It reveals large many-body couplings by fast broadband detection, and it should not be confused with solid-state NMR, which aims at removing the effect of the same couplings by magic angle spinning techniques.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
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The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
2. BASIC:
For mapping It is recognized as
molecular one of the most
Nuclear Magnetic
structures & powerful
Resonance
learning how techniques for
spectroscopy is a
molecules chemical
NDT.
function & relate
analysis.
to each other.
3. The study of absorption
of radiofrequency
radiation by nuclei in a
magnetic field is called
Nuclear Magnetic
Resonance.
4. UTILITIES & IMPORTANCE
The importance of this The utility of this is for structural
technique is reflected in the characterization arises because
efforts that have been made to different atoms in a molecule
extent its applicability to smaller experience slightly different
& smaller sample sizes. magnetic fields.
5. PRINCIPLES
The angular
Nuclear
momentum
associated with
the spin of the
particle would be Spin
an integral or a
half-integral
multiple of h/2pi.
Elementary particles such
as electrons or a nucleus
are known to behave as if
they rotate about an axis
& thus have the property
of spin.
6. Nuclear Energy
Levels
Since a nucleus possesses
a charge, its spin gives rise
to a magnetic field that is
analogous to the field
produced when an electric
current is passed through
a coil of wire.
When a spinning nucleus
is placed in a strong
uniform magnetic field(H),
the field exerts a torque
upon the nuclear magnet.
7. Resonance
Conditions
When an alternating radiofrequency
field, superimposed over the stationary
In general, the energy difference magnetic field, rotates at exactly the
frequency of an energy level, the nuclei
b/w states is given by: will be provided enough energy to
undergo a transition from a lower
energy level to a higher energy level.
8. RELAXATION PROCESS
When nuclei in the higher energy However, the emission is
state return to the lower state, insignificant because the
emission of radiation takes place. probability of re-emission of
There are two major R.P- photons varies with the cube of
the frequency. At radio-
1.Spin-lattice(longitudinal)
frequencies, re-emission is
2.Spin-Spin(transverse) negligible.
9. It is expressed The Chemical
as: shift
The difference b/w
the field necessary
for resonance in
the sample & in
some arbitrarily
chosen reference
compound is
called the
‘Chemical Shift’.
10. TYPES
Continuous-Wave NMR Spectroscopy
A CW-NMR spectrometer consists of a control console,
magnet, & two orthogonal coils of wire that serve as
antennas for radiofrequency radiation.
One coil is attached to an rf generator & serves as a
transmitter.
The other coil is the rf pick-up coil & is attached to the
detection electronics.
11. Fourier Transform NMR Spectroscopy
It use a pulse of rf radiaiton which causes nuclei in
a magnetic field to flip into the higher energy
alignment.
Due to Heisenberg uncertainty principle, the
frequency width of the rf pulse is wide enough to
simultaneously excite nuclei in environment.
All the nuclei will re-emit rf radiation at their
respective resonance frequencies, creating an
interference pattern in the resulting rf emission
vs. time, known as FID(Free Induction Decay)
13. The key parts of the system are:-
A magnet which produces a magneitc field
in the range 10,000-25,000 gauss,
Radio-frequency transmitting
system,
The signal amplifier &
detector,
A display device,
A non-magnetic
sample holder
Computer
workstation
14. ELECTRON SPIN RESONANCE
SPECTROMETERS
It involves detecting the
detection of a physical It is the study of magnetic
phenomenon of dipoles of electronic
absorption of origin by applying, usually
electromagnetic radiation fixed microwave
in the microwave region frequencies to a sample
by paramagnetic species residing in a varying
that are subjected to an magnetic field.
external magnetic field.
16. INSTRUMENTATION FOR E.S
A source of radiation
with which to excite
the sample.
An electron energy
analyzer,
It contains the
following An electron detector
components:
A read-out system,
&
A high vacuum
system
17. INSTRUMENTATION FOR X-RAY
SPECTROMETRY
THE IMPORTANT
PARTS ARE:-
X-ray generating
equipment,
Collimator,
Monochromators,
and
Detectors