1) The document discusses nuclear Overhauser effect (NOE) and nuclear Overhauser spectroscopy (NOESY). NOE occurs when the polarization of one coupled spin is perturbed from equilibrium, affecting the polarization of the other spin through cross-relaxation.
2) NOE factors depend on cross-relaxation rates and longitudinal relaxation rates, and can provide inter-proton distance information useful for structure determination.
3) Applications of NOESY discussed include determining polymer and biomolecule structures, and detecting hydration waters around proteins.
Interparticle Interactions and Dynamics in Solutions of Zinc Perchlorate in A...Dmitry Novikov
This presentation is a report from the IX International conference in chemistry Kyiv-Toulouse (ICKT-9). For any information contact me here: dmitrynovikovs@gmail.com
In this work, conductance data for Zinc(II) perchlorate in acetonitrile (AN) solutions at 5, 15, 25, 35, 45 and 55 °C are reported. The limiting equivalent conductivities of the salt and ionic contributions along with first stage association constants were obtained by means Lee-Wheaton equation for unsymmetrical electrolytes.
Additionally, molecular dynamics simulations (MDS) have been carried out in the NVT ensemble to investigate the dynamics of the particles and microscopic structure of first and second solvation shells (FSS and SSS) of Zinc cation and contact ion pair (CIP) of Zinc cation and perchlorate anion in liquid acetonitrile at 25 °C. Predictable expectation of replacing 1 AN molecule from FSS by perchlorate anion was confirmed by analyzing radial distribution functions and running coordination numbers of the systems explored. Comparing translational and re-orientation dynamics of AN molecules in the cation solvation shell it was found that perchlorate anion strengthens interactions of Zinc cation with solvent molecules while forming CIP.
Interparticle Interactions and Dynamics in Solutions of Zinc Perchlorate in A...Dmitry Novikov
This presentation is a report from the IX International conference in chemistry Kyiv-Toulouse (ICKT-9). For any information contact me here: dmitrynovikovs@gmail.com
In this work, conductance data for Zinc(II) perchlorate in acetonitrile (AN) solutions at 5, 15, 25, 35, 45 and 55 °C are reported. The limiting equivalent conductivities of the salt and ionic contributions along with first stage association constants were obtained by means Lee-Wheaton equation for unsymmetrical electrolytes.
Additionally, molecular dynamics simulations (MDS) have been carried out in the NVT ensemble to investigate the dynamics of the particles and microscopic structure of first and second solvation shells (FSS and SSS) of Zinc cation and contact ion pair (CIP) of Zinc cation and perchlorate anion in liquid acetonitrile at 25 °C. Predictable expectation of replacing 1 AN molecule from FSS by perchlorate anion was confirmed by analyzing radial distribution functions and running coordination numbers of the systems explored. Comparing translational and re-orientation dynamics of AN molecules in the cation solvation shell it was found that perchlorate anion strengthens interactions of Zinc cation with solvent molecules while forming CIP.
Basavarajeeyam is a Sreshta Sangraha grantha (Compiled book ), written by Neelkanta kotturu Basavaraja Virachita. It contains 25 Prakaranas, First 24 Chapters related to Rogas& 25th to Rasadravyas.
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Local Advanced Lung Cancer: Artificial Intelligence, Synergetics, Complex Sys...Oleg Kshivets
Overall life span (LS) was 1671.7±1721.6 days and cumulative 5YS reached 62.4%, 10 years – 50.4%, 20 years – 44.6%. 94 LCP lived more than 5 years without cancer (LS=2958.6±1723.6 days), 22 – more than 10 years (LS=5571±1841.8 days). 67 LCP died because of LC (LS=471.9±344 days). AT significantly improved 5YS (68% vs. 53.7%) (P=0.028 by log-rank test). Cox modeling displayed that 5YS of LCP significantly depended on: N0-N12, T3-4, blood cell circuit, cell ratio factors (ratio between cancer cells-CC and blood cells subpopulations), LC cell dynamics, recalcification time, heparin tolerance, prothrombin index, protein, AT, procedure type (P=0.000-0.031). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and N0-12 (rank=1), thrombocytes/CC (rank=2), segmented neutrophils/CC (3), eosinophils/CC (4), erythrocytes/CC (5), healthy cells/CC (6), lymphocytes/CC (7), stick neutrophils/CC (8), leucocytes/CC (9), monocytes/CC (10). Correct prediction of 5YS was 100% by neural networks computing (error=0.000; area under ROC curve=1.0).
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
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Muktapishti is a traditional Ayurvedic preparation made from Shoditha Mukta (Purified Pearl), is believed to help regulate thyroid function and reduce symptoms of hyperthyroidism due to its cooling and balancing properties. Clinical evidence on its efficacy remains limited, necessitating further research to validate its therapeutic benefits.
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
- Video recording of this lecture in English language: https://youtu.be/kqbnxVAZs-0
- Video recording of this lecture in Arabic language: https://youtu.be/SINlygW1Mpc
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Basavarajeeyam is an important text for ayurvedic physician belonging to andhra pradehs. It is a popular compendium in various parts of our country as well as in andhra pradesh. The content of the text was presented in sanskrit and telugu language (Bilingual). One of the most famous book in ayurvedic pharmaceutics and therapeutics. This book contains 25 chapters called as prakaranas. Many rasaoushadis were explained, pioneer of dhatu druti, nadi pareeksha, mutra pareeksha etc. Belongs to the period of 15-16 century. New diseases like upadamsha, phiranga rogas are explained.
1. 無機物理方法(核磁共振部分)
The Physical Methods in Inorganic
Chemistry
(Fall Term, 2004)
(Fall Term, 2005)
Department of Chemistry
National Sun Yat-sen University
Chapter 6
3. Population Transfer
In population manipulations, the most commonly used technique is
selective population transfer (SPT):
4. Nuclear Overhauser Effect (NOE)
N
S
N
S
r
The distance between the two spins therefore can be determined by disturbing
one of them and observing how other is affected.
12. Whenever a polarization or a transition
of a spin is inverted or saturated, the
polarization or transition of the other
spins that are coupled to it will be
affected.
Perturbation on a Spin (Saturation/Inversion) + Cross Relaxation
The Polarization of Another (Coupled) Spin Is Altered.
Depending on the relative magnitudes of W2 and W0, NOE factor can be
Larger or smaller than 1 and can be both negative and positive.
14. Longitudinal Relaxation Rates
Also Affect NOE
2 2 4
m g R J J J
rII I º I = + +
r 0 w w
1, [ (0) 3 ( 0) 6 (2 0)] 16 p
2 6
54
60
54
60
W2
W0
18 =2+10=12
20
90
100
W2,W0, R1I, R1S all affect overall NOE.
Here W2 > W0, R1I, R1S
80
95
19
34
=15+15=30
R1I
R1S
R1S
Positive NOE
15. Longitudinal Relaxation Rates
Also Affect NOE
2 2 4
m g R J J J
rII I º I = + +
r 0 w w
1, [ (0) 3 ( 0) 6 (2 0)] 16 p
2 6
54
60
54
60
W2
W0
18 =2+10=12
20
90
100
W2,W0, R1I, R1S all affect overall NOE.
Here W2 > W0, R1I, but R1S>W2.
90
96
18
24
=6+6=12
R1I
R1S
R1S
No NOE
16. Longitudinal Relaxation Rates
Also Affect NOE
2 2 4
m g R J J J
rII I º I = + +
r 0 w w
1, [ (0) 3 ( 0) 6 (2 0)] 16 p
2 6
18 =2+10=12
20
90
100
54
54
W2,W0, R1I, R1S all affect overall NOE.
Here W0> W2, but R1I>W0, R1S
95
92
19
22
=3-3=0!
60
60
W2
W0 R1I
R1S
R1S
Negative NOE
17. Relaxation Rates and Motion
logW
W2
log( w t ) 0 c W0
W1
-4 -3 -2 -1 0 1 2 3 4
For slow motions,
W0 is dominant
and NOE tends to
negative.
Fast motion Slow motion
18.
19. Homonuclear Steady State NOE
54
60
54
60
W2
W0
18 =2+10=12
20
90
100
78
90
24
36
=12+12=24
NOE factor depends on W2, W0
31. 1D Homonuclear Transient NOE
180o
A single spin is inverted and the spin system response is
read using a 90° pulse after a “mixing” time delay of variable
duration. In the transient mode, the NOE builds up due to
cross-relaxation of nearby spins by the inverted spin as the
entire spin system.
81
90
90
100
88
85
Neither have to be steady
Nor have to be equilibrium
R1
R1
R1
90
100
81
90
W2
W0
98
90
32. NOE: Essence
Whenever the polarization of one of two coupled spins
deviates from its equilibrium value, the polarization of
the other spin is affected by cross relaxations. The
NOE factor (the extent that the polarization of the
unperturbed spin is affected) depends on cross
relaxation rates and longitudinal relaxation rates.
N
S
N
S
r
33.
34. When the distance between spins A and B is smaller than ~ 5 Å, NOE
cross peaks are observable.
A
B
40. 1D Homonucelar ROE
180o 90o
A single transition is inverted using a selective 180° pulse (along the x axis), and
then a hard 90° x pulse is immediately applied to the spin system.
This has the effect of placing the “inverted” magnetization along the -y axis while
the rest of the magnetization is aligned along +y. Then, a low-power rectangular
pulse is applied long the y-axis.
This pulse is applied parallel to the magnetization (in the rotating frame) and effects
no net rotation. Instead, it “locks” the magnetization along the y axis, and is referred
to as a spin lock pulse. The magnetization is said to be spin locked because
it doesn’t precess about B0, but the spins now precess aboutB1(the spin lock pulse).
Therefore, under these conditions, the magnetization can be considered to being
analogous to alignment along the z axis in the presence of B0 alone.
Finally, the spins will relax towards a new equilibrium in the presence of B1;
the characteristic time constant for this decay is called T1ρ forT1in the rotation frame.
41. ROE Mechanism:
All relaxation rates are changed
into rotating frame.
95
76
81
100
90
Y
Rotating frame Note that both W2 and W0 promote ROE!
81
90
90
100
98
92
Z
R1rho
R1rho
R1rho
90
W2rho
W0,rho
42.
43.
44. For homonuclear systems
2 2 4
m g J J
NOE
II = - +
s 0 w
[ (0) 6 (2 0)] 16 p
2 6
rII
2 2 4
m g J J
ROE
II = +
s 0 w
[2 (0) 3 (2 0)] 16 p
2 6
rII
W2 promotes NOE while W0
blocks NOE
Both W2 and W0 promote ROE
48. NOE
IS IS r
I
s h =
2 2 4
m g R J J J
rII I º I = + +
r 0 w w
1, [ (0) 3 ( 0) 6 (2 0)] 16 p
2 6
2 2 4
m g J J
NOE
II = - +
s 0 w
[ (0) 6 (2 0)] 16 p
2 6
rII
52. S
s
(0)
h = s < >
=
IS g
I
NOE
IS
I
z
(0)
z
NOE
IS
I
S
I
g
r
r
< >
53.
54.
55. Some Applications of NOESY
Sterochemistry
Polymers
Hydration of biomolecules
Structure determination of biomacromolecules
56. p
ö çè
÷ø
æ
I S ¾¾¾¾®- I -
S
( ) X
( )
Z Z Y Y
I t I t
W
¾¾¾¾®- W + W
cos( ) sin( )
Y I X I
1 1
t I
Z
S t S t
- W + W
( cos( ) sin( ))
Y S X S
I t I t
p
ö çè
÷ø
æ
¾¾¾¾®- W + W
cos( ) sin( )
Z I X I
1 1
X
S t S t
- W + W
( cos( ) sin( ))
(magnetization transfer)
Z S X S
1 1
t
I t S t a I S
- W - W ¾¾¾¾¾¾¾¾¾¾¾® +
cos( ) cos( ) ( )
1 1
2
1 1
2
1 1
m
Z I Z S Z Z
65. NOE SY of Poly(N-vinyl-carba zole): CHCl3, mixing time:450 ms, 500 MHz, 303 K
66. Detection of hydration water via observation
of NOEs from water-protein
--- G. Otting, E. Liepinsh, K. Wuthrich, Science 1991,254,974
BPTI 牛胰蛋白抑制劑
Residues : 58
Internal water : 4
Residence times:
Interior water:10-2-
10-8s
Surface water:10-9s
67. Assignments of water-solute cross peak :
(a) Direct water-solute NOE
(hydration water-solute)
(b) Exchange-relayed NOE
(solute-solute)
(c) Chemical exchange
(bulk water-solute)
Non-labile
Labile
Labile
--- G. Otting, J. Progr. NMR. Spectrosc. 1997, 31 , 259
71. R1
C
H
C
O
i i+1
N
H
R2
C
H
C
O
R3
N C C
H H O
N
H
C
H
C
R4
O
N
H
C
H
C
R5
O
COSY
NOESY NOESY
CTX II: 44-60
i COSY NOESY (i+1)
NH-CαH iCαH-(i+1)NH COSY
(i+1)NH-CαH
COSY