Fluidized bed drying is widely used for drying pharmaceutical powders and granules. It allows for direct contact between particles and heated air or gas, resulting in uniform and efficient drying. Hot air is passed through the granules in a perforated container, lifting the granules and suspending them in the air stream. This exposes all surfaces of the granules to the hot air, drying them quickly and uniformly. Fluidized bed drying requires less time than other methods, avoids hot spots, and allows for drying of heat-sensitive materials.
introduction, theory of drying, applications of drying, construction & working about fluidised bed dryer,use of tray dryer,construction about vacuum dryer, construction & working about drum dryer, construction about spray dryer
introduction, theory of drying, applications of drying, construction & working about fluidised bed dryer,use of tray dryer,construction about vacuum dryer, construction & working about drum dryer, construction about spray dryer
This presentation will help the students of Pharmacy in subjects like Pharmaceutics and industrial pharmacy. Hope you will find it better and helpful.
Regards
Amjad Anwar
email: amjadanwar77@gmail.com
Department of Pharmacy, University Of Malakand
Pharmaceutical Dryers. Dryers are used in a variety of industries, such as the food processing, pharmaceutical, paper, pollution control and agricultural sectors. ... Direct dryers convectively heat a product through direct contact with heated air, gas or a combusted gas product.
About Aaron Equipment
Aaron Equipment Company is dedicated to one common goal, of providing the customer with quality equipment and dependable service at competitive prices. This has helpedAaron Equipment earnan international reputation as one of the world's leading dealers in the Process & Packaging Equipment Industry.
Aaron's inventory contains the largest selection of process equipment in the industry. As specialists in equipment procurement, Aaron advises its clients on the availability of equipment from single machines to large plants and processes. This equipment is available on an 'as is' basis, or the equipment can be reconditioned by Aaron’s skilled mechanics. In fact, they are so intent on ensuring customer satisfaction, most items can be inspected under power in one of their fully equipped warehouses
This was my pharmaceutics presentation for mixing. Provides definitions, mechanism, types of mixers etc.
P.S: I am not the sole presenter. Ideas are from my two other colleagues as well.
Mixer Machines Mixer Machines are used in a number of different applications and industries in order to produce a final product that is the result of mixing or combining two or more materials.
What is The Process, Structure and Working of a Rapid DryerVJInstruments
In the pharmaceutical industry, a Rapid Dryer (also known as a fluid bed dryer) is used extensively to decrease the moisture content of medicinal powder and granules.
This presentation will help the students of Pharmacy in subjects like Pharmaceutics and industrial pharmacy. Hope you will find it better and helpful.
Regards
Amjad Anwar
email: amjadanwar77@gmail.com
Department of Pharmacy, University Of Malakand
Pharmaceutical Dryers. Dryers are used in a variety of industries, such as the food processing, pharmaceutical, paper, pollution control and agricultural sectors. ... Direct dryers convectively heat a product through direct contact with heated air, gas or a combusted gas product.
About Aaron Equipment
Aaron Equipment Company is dedicated to one common goal, of providing the customer with quality equipment and dependable service at competitive prices. This has helpedAaron Equipment earnan international reputation as one of the world's leading dealers in the Process & Packaging Equipment Industry.
Aaron's inventory contains the largest selection of process equipment in the industry. As specialists in equipment procurement, Aaron advises its clients on the availability of equipment from single machines to large plants and processes. This equipment is available on an 'as is' basis, or the equipment can be reconditioned by Aaron’s skilled mechanics. In fact, they are so intent on ensuring customer satisfaction, most items can be inspected under power in one of their fully equipped warehouses
This was my pharmaceutics presentation for mixing. Provides definitions, mechanism, types of mixers etc.
P.S: I am not the sole presenter. Ideas are from my two other colleagues as well.
Mixer Machines Mixer Machines are used in a number of different applications and industries in order to produce a final product that is the result of mixing or combining two or more materials.
What is The Process, Structure and Working of a Rapid DryerVJInstruments
In the pharmaceutical industry, a Rapid Dryer (also known as a fluid bed dryer) is used extensively to decrease the moisture content of medicinal powder and granules.
Nowadays, fluid bed dryers are widely used in the food processing industries. The primary reason for such popularity is that these machines improve the quality of products and reduce the drying time. Moreover, this equipment operates hygienically and ensures excellent safety. It is not only beneficial to the environment but also increases cost-effectiveness by reducing energy consumption. VJ Instruments consists of various products ball mill machine in pharmaceutics, cone blender, morris water maze.
A fluidized bed dryer (also called fbd fluid bed dryer) is a kind of equipment used extensively in the pharmaceutical industries to reduce pharmaceutical powder and granules’ moisture content. Drying is essential for wet granules for compression into the tablet and modifying viscous and sticky materials’ characteristics. Drying is commonly the last step in the unit process before compression into tablet form and packaging. VJ Instruments have many pharmaceutical instruments like coating tablet machine , double cone blender.
specifications and working of two stage spray drier with fluidized bed drier installed in experimental dairy,national dairy research institute,karnal,haryana
Classification of dryers, Their operations and maintenance, Sources of heat for drying &
drying schedule, Defects at green stage- causes & remedies, Heat and mass transfer in dryers, Rate
of drying, Drying mechanism of non porous and porous solids, Shrinkage and case hardening,
Through circulating and suspended bed drying, Drying equipment- for solids pastes slurries and
solution.
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micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
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New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
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
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
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The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
2. Fluid bed drying is most widely used technique for drying
pharmaceutical powders and granulation.
The direct contact between particles and air/gas is possible in fluid
bed system.
Here any type of inert gas or air is used.
They can be designed in either batch or continuous type fluid bed
dryer.
In fluidized bed dryer, hot air is passed at high pressure through a
perforated bottom of the container containing granules to be dried.
The granules are lifted from the bottom and suspended in the stream
of air.
3. The hot gas surrounding every granule to completely dry them.
Thus, material or granules are uniformly dried.
The hot air/gas used for drying can be generated by either steam
coils or a combustion furnace.
The angle of repose of gas-solid mixture is zero and it assumes
the shape of the vessel that contains it.
In fluid bed drying uniform conditions of temperature,
composition and particle size distribution is achieved throughout
the bed because of complete mixing between the solids and gas is
obtained.
4.
5. Fluidized bed dryer requires less time to complete drying. i.e., 20 to
40 min.
Hot spots are not observed in the dryer, because of its excellent
mixing and drying capacities.
The thermal efficiency is 2 to 6 times greater than tray dryer.
It facilitates the drying of thermolabile substances , since the
contact time for drying is short.
It can be used either as batch type or continuous type.
The free movement of individual particles eliminates the risk of
soluble material migrating as may occur in static bed.
6. Many organic powders develop electrostatic charges during
drying which can be avoided by efficient electrical earthing of
the dryer.
The turbulence of the fluidized state of granules may cause
attrition of some materials resulting in production of fines
which can be be avoided by using suitable binding agent.
7. Apparatus Parameters
Air distribution plate Position of the air distribution plate influences
the airflow pattern inside the body.
Shape of instrument body Annular base gives better product and
fluidization
Nozzle height in case of coater and granulator. It plays vital role as
in coating, the atomized coating solution should not get dried before
reaching the tablet surface.
Positive and negative pressure operation.
8. Process Parameters
1) Temperature
As the inlet air temperature increases the rate of drying increases
and vice versa.
This approach to increase the rate of drying can not be used
always because some materials are harmed by high temperature, e.g.
Ibuprofen liquefies above 60°C temperature of inlet air should be
optimized without any impact on product quality.
If temperature is high, it leads to blistering. If temperature is low,
soft spot can be formed.
2) Humidity
Humidity in the inlet air should be as low as possible and ideally
dehumidified air should be used for faster drying rate because as the
humidity of inlet air decreases the rate of drying increases.
9. 3) Air flow rate:
Air flow rate should be controlled properly in order to get
efficient use of drying air. Air flow rate should not be too
fast or too slow but optimized to have efficient drying.
Product Parameters
1)Initial moisture content of material.
It should not be high otherwise it increases drying time.
2)Batch size.
It should be small and optimized based on feasibility.
10. A)Batch Type Vertical Fluid Bed Dryer With Granulating option
1. Reverse Turning Bed Type
In this equipment, by turning the gas dispersion plate (the reverse
turning bed) in 90° direction with the control motor, all the dried
material can be discharged at once.
2. Rotating Discharge Type
Dried material is discharged by opening the discharge gate equipped
at the side of the Dryer. As the perforated plate is used as the gas
dispersion plate, the gas inside the equipment whirls and pushes the
dried material out from the discharge gate.
11.
12. The residence period of the dried material can be controlled
which results in uniform drying.
It is most suitable in case where an accurate control of the
residence period is required at the decreasing rate drying zone.
Small destruction of particle occurs therefore suitable for
granular or crystallized material.
Easy operation can be achieved by an automatic control of
material feeding, drying discharging etc. When multiple stage
system us adopted, the exhaust gas heat can be used
efficiently.
13. B)Continuous Type Horizontal Vibrating Conveyor FBD
Residence time in any drying zone is dependent on
(1) Length of the zone
(2) The frequency and the amplitude of the vibration
(3) Use of dams
Heat transfer units such as tube or plate, are built inside
the equipment.
These unit supplies 60-80 % heat necessary for drying.
14.
15. The materials with relative high moisture content can also be dried.
At and after a second drying chamber, piston flow ability can be
achieved by arranging numbers of the partition plates as per the
required residence period.
The perforated plate at the fixed direction ensures easy discharging.
Small destruction of particles, so suitable for granules or crystalline
materials.
In multiple zones fluid bed dryers, heating and cooling occurs in
same unit.
Each zone has independent control for temperature, dewpoint and
velocity of air/gas.
By adjusting the weir height for each zone, residence time can vary
up to four fold in the unit.
16. The construction of a vertical fluidized bed dryer
The dryer is made of stainless steel or plastic.
A detachable bowl is placed at the bottom of the dryer, which is
used for charging and discharging.
The bowl has a perforated bottom with a wire mesh support for
placing materials to be dried.
A fan is mounted in the upper part for circulating hot air.
Fresh air inlet, pre-filter and heat exchanger are connected serially
to heat the air to the required temperatures.
The temperature of hot air and exit are monitored.
Bag filters are placed above the drying bowl for recovery of fines.
17.
18. When the velocity of the air is greater than the settling velocity of
granules, the granules remain partially suspended in the gas stream.
After some time, a point of pressure is reached at which frictional
drag in the particles is equal to the force of gravity.
The granules rise in the container because of high velocity gas and
fell back in a random boiling motion.
This condition is said to be fluidized state.
Drying is achieved at constant rate and falling rate period is very
short.