Electric circuit is the path in which electric current flows from a source across various components.
Electric circuit diagram is the diagrammatic representation of an electric circuit.
HEAT
TEMPERATURE
LAND BREEZE
EFFECT OF HEAT
MEASUREMENT OF TEMPERATURE
CLINICAL THERMOMETERS
DIGITAL THERMOMETERS
SEA BREEZE
TRANSFER OF HEAT
CONDUCTION
CONVECTION
CONDUCTORS AND INSULATORS
RADIATION
DARK COLOURED SURFACES AND COLOURED SURFACES
WIND
The following power point discusses about the Chemical Effects of Electric Current. In this, we study about how electricity is conduced in liquids, electrolysis and the uses and applications of it
Class 7th science chapter 8. Winds, Storms and CyclonesSwayam Khobragade
This ppt file is converted into pdf so if u want to use it you may download it and convert it into ppt so u can use it for expaining the concepts of this chapter...... This ppt contains only the information given in the textbook.. This ppt also have the keywords,exercises and other basic knowledge....
HEAT
TEMPERATURE
LAND BREEZE
EFFECT OF HEAT
MEASUREMENT OF TEMPERATURE
CLINICAL THERMOMETERS
DIGITAL THERMOMETERS
SEA BREEZE
TRANSFER OF HEAT
CONDUCTION
CONVECTION
CONDUCTORS AND INSULATORS
RADIATION
DARK COLOURED SURFACES AND COLOURED SURFACES
WIND
The following power point discusses about the Chemical Effects of Electric Current. In this, we study about how electricity is conduced in liquids, electrolysis and the uses and applications of it
Class 7th science chapter 8. Winds, Storms and CyclonesSwayam Khobragade
This ppt file is converted into pdf so if u want to use it you may download it and convert it into ppt so u can use it for expaining the concepts of this chapter...... This ppt contains only the information given in the textbook.. This ppt also have the keywords,exercises and other basic knowledge....
14 chemical effects of electric currentCHEKIT SHARMA
this is the best chapter in science as it is my favioratie as i love chemistry and even i think that the people who would view this will like so i request to plese like share and comment so ok today only this much is enough so i'll leave bye
Click Here: https://www.digistore24.com/redir/269221/Manikji/
Topics Included:
• Inside View of a Torch
• Electric Bulb
• Filament
• Terminal
• Electrical Energy
• Electric Cell
• Electric Circuit
• Types of Circuit
• Open and Closed Switch
• Solar Cell
• Conductor and Insulator
• Different Methods of Producing Electricity
this presentation is on the chapter reproduction in animals for class 8 . it includes all the topics in detail mentioned in the chapter . i have made it with a lot of hard work . hope u like it !
Chapter - 1, Crop Production and Management, Science, Class 8 Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 1, Crop Production and Management, Science, Class 8
INTRODUCTION
CROP
KHARIF CROPS
RABI CROPS
BASIC PRACTICES OF CROP PRODUCTION
PREPARATION OF SOIL
SOWING AND QUALITY OF SEEDS
TRADITIONAL TOOLS (SOWING)
SEED DRILL (SOWING)
MANURE AND FERTILIZERS
IRRIGATION
TRADITIONAL METHODS OF IRRIGATION (MOAT, RAHAT, CHAIN PUMP & DHEKLI)
MODERN METHODS OF IRRIGATION (SPRINKLER SYSTEM & DRIP SYSTEM)
WEEDS
PROTECTING FROM WEEDS
HARVESTING (MANUAL & BY MACHINE)
THRESHING (MANUAL & BY MACHINE)
WINNOWING
STORAGE
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur & Teacher)
SOUND
MUSICAL INSTRUMENT
PROPAGATION OF SOUND
PRODUCTION OF SOUND MUSICAL INSTRUMENTS
SPEED OF A SOUND
WOODWINDS INSTRUMENTS
String INSTRUMENTS
Percussion INSTRUMENTS
Brass INSTRUMENTS
SOUND PRODUCED BY HUMANS
SPEED OF LIGHT V/S SOUND
SOUND PRODUCED BY ANIMAL
VIBRATION & OSCILLATION
LOUDNESS AND PITCH OF SOUND
HUMAN EARS
PERSISTENCE OF HEARING
Echo & REVERBERATION
AUDIBLE AND INAUDIBLE SOUND
NOISE AND MUSICAL SOUND
Noise pollution
HEARING IMPAIRMENT
SIGN LANGUAGE
Reflection of sound
Uses of multiple reflection of sound
SONAR
Chapter - 10, Respiration in Organisms, Science, Class 7Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 10, Respiration in Organisms, Science, Class 7
WHY DO WE RESPIRE?
CELLULAR RESPIRATION
TYPES OF RESPIRATION
ANAEROBES
ANAEROBIC RESPIRATION IN HUMAN BEINGS
BREATHING
BREATHING RATE
THE MECHANISM OF BREATHING IN HUMAN BEINGS
INHALATION
EXHALATION
WHY DO WE SNEEZE?
BREATHING IN COCKROACH
BREATHING IN EARTHWORMS
BREATHING UNDERWATER
BREATHING IN FISH
RESPIRATION IN PLANTS
WHY PLANTS CAN DIE IF OVERWATERED?
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 13, Sound, Science, Class 8
WHAT IS SOUND?
INTRODUCTION TO SOUND
SOUND-PRODUCING MUSICAL INSTRUMENTS
SOUND PROPERTIES
HOW DO HUMANS PRODUCE SOUND?
HOW SOUND PROPAGATE IN A MEDIUM?
SOUNDS BY HUMANS
THERE ARE THREE MAJOR PARTS OF THE HUMAN EAR
AMPLITUDE, TIME PERIOD, AND FREQUENCY
THE LOUDNESS OF A SOUND
PITCH OF THE SOUND
AUDIBLE AND INAUDIBLE SOUNDS
NOISE AND MUSIC
NOISE POLLUTION
CAUSES OF NOISE POLLUTION
EFFECTS OF NOISE POLLUTION
PREVENTION OF NOISE POLLUTION
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
Electric current and its effect CLASS-8Ravi Prakash
Electric current
HEATING EFFECT OF CURRENT
MAGNETIC EFFECT OF CURRENT
ELECTROMAGNET
ELECTRIC BELL
ADVANTAGE OF HEATING EFFECT
DISADVANTAGE OF HEATING EFFECT
SYMBOLS OF ELECTRIC COMPONENTS
MINIATURE CIRCUIT BREAKER (MCB)
ELECTRIC FUSE
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter 4 - Heat, Science, Class 7
HEAT
HOT AND COLD
THERMOMETER
CLINICAL THERMOMETER
HOW TO USE CLINICAL THERMOMETER?
WHILE USING CLINICAL THERMOMETER, THE FOLLOWING PRECAUTIONS SHOULD BE TAKEN
LABORATORY THERMOMETER
WHILE USING LABORATORY THERMOMETER, THE FOLLOWING PRECAUTIONS SHOULD BE TAKEN
DIGITAL THERMOMETER
TRANSFER OF HEAT
CONDUCTION
CONDUCTORS
INSULATORS
CONVECTION
RADIATION
SEA BREEZE
LAND BREEZE
CLOTHES IN WINTERS AND SUMMERS
HOW DO WOOLLEN CLOTHS KEEP US WARM?
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur & Teacher)
14 chemical effects of electric currentCHEKIT SHARMA
this is the best chapter in science as it is my favioratie as i love chemistry and even i think that the people who would view this will like so i request to plese like share and comment so ok today only this much is enough so i'll leave bye
Click Here: https://www.digistore24.com/redir/269221/Manikji/
Topics Included:
• Inside View of a Torch
• Electric Bulb
• Filament
• Terminal
• Electrical Energy
• Electric Cell
• Electric Circuit
• Types of Circuit
• Open and Closed Switch
• Solar Cell
• Conductor and Insulator
• Different Methods of Producing Electricity
this presentation is on the chapter reproduction in animals for class 8 . it includes all the topics in detail mentioned in the chapter . i have made it with a lot of hard work . hope u like it !
Chapter - 1, Crop Production and Management, Science, Class 8 Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 1, Crop Production and Management, Science, Class 8
INTRODUCTION
CROP
KHARIF CROPS
RABI CROPS
BASIC PRACTICES OF CROP PRODUCTION
PREPARATION OF SOIL
SOWING AND QUALITY OF SEEDS
TRADITIONAL TOOLS (SOWING)
SEED DRILL (SOWING)
MANURE AND FERTILIZERS
IRRIGATION
TRADITIONAL METHODS OF IRRIGATION (MOAT, RAHAT, CHAIN PUMP & DHEKLI)
MODERN METHODS OF IRRIGATION (SPRINKLER SYSTEM & DRIP SYSTEM)
WEEDS
PROTECTING FROM WEEDS
HARVESTING (MANUAL & BY MACHINE)
THRESHING (MANUAL & BY MACHINE)
WINNOWING
STORAGE
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur & Teacher)
SOUND
MUSICAL INSTRUMENT
PROPAGATION OF SOUND
PRODUCTION OF SOUND MUSICAL INSTRUMENTS
SPEED OF A SOUND
WOODWINDS INSTRUMENTS
String INSTRUMENTS
Percussion INSTRUMENTS
Brass INSTRUMENTS
SOUND PRODUCED BY HUMANS
SPEED OF LIGHT V/S SOUND
SOUND PRODUCED BY ANIMAL
VIBRATION & OSCILLATION
LOUDNESS AND PITCH OF SOUND
HUMAN EARS
PERSISTENCE OF HEARING
Echo & REVERBERATION
AUDIBLE AND INAUDIBLE SOUND
NOISE AND MUSICAL SOUND
Noise pollution
HEARING IMPAIRMENT
SIGN LANGUAGE
Reflection of sound
Uses of multiple reflection of sound
SONAR
Chapter - 10, Respiration in Organisms, Science, Class 7Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 10, Respiration in Organisms, Science, Class 7
WHY DO WE RESPIRE?
CELLULAR RESPIRATION
TYPES OF RESPIRATION
ANAEROBES
ANAEROBIC RESPIRATION IN HUMAN BEINGS
BREATHING
BREATHING RATE
THE MECHANISM OF BREATHING IN HUMAN BEINGS
INHALATION
EXHALATION
WHY DO WE SNEEZE?
BREATHING IN COCKROACH
BREATHING IN EARTHWORMS
BREATHING UNDERWATER
BREATHING IN FISH
RESPIRATION IN PLANTS
WHY PLANTS CAN DIE IF OVERWATERED?
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 13, Sound, Science, Class 8
WHAT IS SOUND?
INTRODUCTION TO SOUND
SOUND-PRODUCING MUSICAL INSTRUMENTS
SOUND PROPERTIES
HOW DO HUMANS PRODUCE SOUND?
HOW SOUND PROPAGATE IN A MEDIUM?
SOUNDS BY HUMANS
THERE ARE THREE MAJOR PARTS OF THE HUMAN EAR
AMPLITUDE, TIME PERIOD, AND FREQUENCY
THE LOUDNESS OF A SOUND
PITCH OF THE SOUND
AUDIBLE AND INAUDIBLE SOUNDS
NOISE AND MUSIC
NOISE POLLUTION
CAUSES OF NOISE POLLUTION
EFFECTS OF NOISE POLLUTION
PREVENTION OF NOISE POLLUTION
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
Electric current and its effect CLASS-8Ravi Prakash
Electric current
HEATING EFFECT OF CURRENT
MAGNETIC EFFECT OF CURRENT
ELECTROMAGNET
ELECTRIC BELL
ADVANTAGE OF HEATING EFFECT
DISADVANTAGE OF HEATING EFFECT
SYMBOLS OF ELECTRIC COMPONENTS
MINIATURE CIRCUIT BREAKER (MCB)
ELECTRIC FUSE
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter 4 - Heat, Science, Class 7
HEAT
HOT AND COLD
THERMOMETER
CLINICAL THERMOMETER
HOW TO USE CLINICAL THERMOMETER?
WHILE USING CLINICAL THERMOMETER, THE FOLLOWING PRECAUTIONS SHOULD BE TAKEN
LABORATORY THERMOMETER
WHILE USING LABORATORY THERMOMETER, THE FOLLOWING PRECAUTIONS SHOULD BE TAKEN
DIGITAL THERMOMETER
TRANSFER OF HEAT
CONDUCTION
CONDUCTORS
INSULATORS
CONVECTION
RADIATION
SEA BREEZE
LAND BREEZE
CLOTHES IN WINTERS AND SUMMERS
HOW DO WOOLLEN CLOTHS KEEP US WARM?
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur & Teacher)
This presentation is for classes 7 and 6 to know about electricity.
It is important these days we use electricity for many purposes .
It was discover by Hans Christian Oersted . this is having all knowlegde about Electric cell
The danger sign
Electric bulb
Fused bulb
Electric components and its symbol
Battery
Electric circuits
Electric torch
Drawing an electric circuit diagram
Electric switches
Heating effect of electric current
Production of light
Electric fuse
Magnetic effect of electric current
Conductors and insulators
thankyou
Simulation of Induction heater using IRFZ44N MOSFETanjeana
This PPT contains the Schematic circuit model and simulated output of Induction heater using IRFZ44N MOSFET along with the working principle and block diagram.
ORAL MANIFESTATIONS OF SYPHILIS-A reviewishita1994
Syphilis is an infectious disease of most extreme significance these days, which has made a rebound after the presence of AIDS.
It might introduce oral lesions in all stages.
A sharp information on its different oral signs is significant for appropriate determination and satisfactory treatment.
Infective syphilis is brought about by the anaerobic filamentous spirochete, Treponema pallidum.
Previously decade there has been a noteworthy ascent in the prevalence of infective syphilis in the created world.
Striking increments in the recurrence of syphilis have happened in Eastern Europe, and more modest ascents have been accounted for in Western Europe and the US.
Paget’s disease of bone with special reference to dentistry-an insightishita1994
Bone is a dynamic tissue that is constantly renewed. The cell populations that participate in this process; the osteoblasts and osteoclast are derived from different progenitor pools that are under distinct molecular control mechanisms. Together, these cells form temporary anatomical structures, called as basic multicellular units that execute bone remodeling. A number of stimuli affect bone turnover, including hormones, cytokines, and mechanical stimuli. All of these factors affect the amount and quality of the tissue produced. Paget’s disease is a bone disorder characterized by excessive and abnormal remodeling of the bone, resulting in distortion and weakness of affected bones. It is the second‑most common osteo dystrophic condition after osteoporosis.
Epidemiology and Diagnosis of Mucormycosisishita1994
Mucormycosis is an angioinvasive fungal infection due to fungi of the order Mucorales.
Depending on the clinical presentation it is classified as rhinocerebral, pulmonary, cutaneous, gastrointestinal, disseminated or other, which includes uncommon rare forms, such as endocarditis, osteomyelitis, peritonitis, renal, etc.
The disease was first described in 1876 when Fürbinger described in Germany a patient who died of cancer and in whom the right lung showed a hemorrhagic infarct with fungal hyphae and a few sporangia.
In 1885, Arnold Paltauf published the first case of disseminated mucormycosis, which he named “Mycosis mucorina”.
His drawings of the etiologic agent showed the presence of sporangiophores and rhizoid-like structures, and this led to the conclusion that the infection was most probably caused by Lichtheimia corymbifera.
Over time, more cases were diagnosed, and the incidence of the disease has increased.
Currently, Mucorales fungi are the next most common mold pathogens after Aspergillus, leading to invasive fungal disease in patients with malignancies or transplantation.
The incidence of mucormycosis has also increased significantly inpatients with diabetes, which is the commonest underlying risk factor globally.
Τhe epidemiology of mucormycosis is evolving as new immunomodulating agents are used in the treatment of cancer and autoimmune diseases, and as the modern diagnostic tools lead to the identification of previously uncommon genera/species such as the Apophysomyces or Saksenaea complex.
Oral cancer is the world’s 6th most common malignancy and has one of the lowest survival rates, often due to late diagnosis. The most important determinant factor in cancer survival is diagnostic delay and it directly affects the survival rate.
Most oral cancers are preceded by precancerous lesions and early cancers that can be identified by visual inspection of the oral cavity. Conventional oral examination is useful in the discovery of some oral lesions, but it does not identify all potentially premalignant lesions, as some are not readily apparent to visual inspection alone.
Adjunctive techniques have emerged that may facilitate early detection of oral premalignant and malignant lesions. Thorough clinical examinations being one of the best modalities in suspecting the pathology, the biggest disadvantage in the diagnosis lies in detecting the site of biopsy and also whether biopsy is required or not in early lesions.
Nowadays various diagnostic aids have been established in detecting such lesions but easy chair-side techniques can be used if possible. And one such technique is by using vital staining with dyes which is used for early recognition of lesion and also can improve the patient survival rate.
CLINICOPATHOLOGICAL FEATURES OF PERIPHERAL OSSIFYING FIBROMA IN A SERIES OF 4...ishita1994
Peripheral ossifying fibromas are benign mesenchymal lesions that usually arise in the anterior maxilla of young female patients. Histologically they consist of spindle cell proliferation with focal mineralization. We reviewed 48 specimens from 41 patients and recorded the clinical data, sex, and age of the patients, site, and size of the lesions, treatment, and postoperative outcome. Histologically the presence of mature, woven bone, cementum, and calcifications was evaluated and evaluated immunohistochemically. Lesions were more frequent in female patients in the third and fourth decade and were usually in the lower maxilla and smaller than 2 cm. All lesions were conservatively excised, and they relapsed in eight patients. Histopathologically, the lesions were poorly circumscribed, with moderately cellular proliferation, and with no discernible architectural pattern. All tumors showed some degree of mineralization, the presence of immature bone being the most common. Immunohistochemical examination showed staining of tumoral cells for smooth muscle actin and CD68. Lesions tended to occur more commonly in female patients, but one decade later than usually reported. We found a higher recurrence rate in lesions that contained cementum-like material but without bone formation, suggesting a lack of maturation in this group. Immunohistochemical results were consistent with myofibroblastic differentiation but they added no information about the behavior of the lesions.
Pathophysiology of myoepithelial cells in salivary glandsishita1994
In salivary glands and other exocrine glands, there are
star‑shaped cells lying between the basal lamina and the acinar
and ductal cells. These cells structurally resemble epithelial cells
and smooth muscles and, thus, are referred to as myoepithelial
cells (MECs). Because of their shape and interwoven processes,
they were commonly referred to as “star‑shaped cells” or
“basket cells.” Tamarin described these cells as being “like an
octopus sitting on a rock”.
Current concepts of pemphigus with a deep insight into its molecular aspectishita1994
Pemphigus vulgaris is an autoimmune bullous disease involving both the skin and mucosal areas, which
is characterized by intraepithelial flaccid blisters and erosions. The pathogenesis of this disease is not
yet completely established, but novel intuitions into its pathogenesis have recently been published. An
unanswered question in its pathophysiology is the mechanism of acantholysis or loss of keratinocyte
cell adhesion. Acantholysis seems to result from a communal action of autoantibodies against numerous
keratinocyte self‑antigens, of which desmogleins 1 and 3, desmocollins and nondesmosome components,
such as the mitochondrion, might take part in the disease initiation. Lately, apoptosis was described as
a possible underlying mechanism of acantholysis. Likewise, apoptolysis is assumed to be the association
between suprabasal acantholytic and cell death pathways. Hence, the present review focuses on the current
concepts in the pathogenesis of the pemphigus in a nutshell.
Cytoskeleton of a cell is made up of microfilaments, microtubules and intermediate filaments. Keratins are diverse proteins. These intermediate filaments maintain the structural integrity of the keratinocytes. The word keratin covers these intermediate filament-forming proteins within the keratinocytes. They are expressed in a specific pattern and according to the stage of cellular differentiation. They always occur in pairs. Mutations in the genes which regulate the expression of keratin proteins are associated with a number of disorders which show defects in both skin and mucosa. In addition, there are a number of disorders which are seen because of abnormal keratinization. These keratins and keratin-associated proteins have become important markers in diagnostic pathology. This review article discusses the classification, structure, functions, the stains used for the demonstration of keratin and associated pathology. The review describes the physiology of keratinization, pathology behind abnormal keratin formation and various keratin disorders.
Romanowsky staining or Romanowsky–Giemsa staining, is a prototypical staining technique, widely used in hematology and cytopathology.
They are used to differentiate cells for microscopic examination in air dried cytological smears or pathological specimens, especially blood and bone marrow films, and to detect parasites such as malaria within the blood.
Romanowsky stains is a neutral dye containing both acid and basic dyes in combination. It contains both azure B (electron acceptor) and eosin Y (electron donor).
The value of Romanowsky staining lies in its ability to produce a wide range of hues, allowing cellular components to be easily differentiated. This phenomenon is referred to as the Romanowsky effect, or more generally as metachromasia.
These stains allow better estimation of cell size, nuclear size, cell cytoplasm and identify ground substances by metachromasia.
The tissue section is colourless because the fixed protein has the same refractive index as that of glass. We use dyes that have specific affinity with the different tissue proteins and colour them differently.
Colour is seen by the eye as a result of the effect of certain electromagnetic waves on the rods and cones of the retina. These waves, which have a varying length, will determine the colour that is seen.
White light being composed of all the colours of the visible spectrum varies in wavelength from 4,000 Â to 8,000 Â.
If light of a specific wavelength is absorbed from white light the resultant light will then be coloured, the colour being dependent upon the particular wavelength that has been removed.
Ghost cells are translucent balloon shaped , elliptical epithelial cells are recognized as swollen, pale, eosinophilic cells.
They are seen either singly or in sheets with a clear conservation of basic cellular outline, generally with apparent clear areas or with some remnants indicative of the site previously occupied by the nucleus.
The transformation of epithelial cells into more resistant terminally differentiated apoptotic cells i.e., ghost cells are responsible for the banal behavior of neoplasms and they also help in relieving the stress of the forming neoplasm.
The most accepted nature of ghost cells is aberrant keratinization that is altered form of keratin as it doesn’t stain with normal cytokeratin antibodies.
Tonofilaments have been observed universally in the ghost cells of all the odontogenic or non-odontogenic tumors but these solely don’t satisfy their nature which is also found to be positive for enamel proteins in odontogenic tumors.
Although, studies prove an intricate functional relationship exists between Wnt and Notch signalling during development of neoplasms and in assigning cells to particular fates.
Their relationship along with other signalling pathways complex interaction during tumorigenesis also needs intensive evaluation and this would help revealing the missing link between odontogenic and non-odontogenic tumors exhibiting these similar looking mysterious ghost cells.
Mineralization (calcification) is the process of deposition of insoluble calcium salts in a tissue. It is one of the important steps in the formation of hard tissues of the body that is enamel, dentin, bone, and cementum. The synthetic cells, along with the help of the enzyme alkaline phosphatase, aid the mineralization process. The mineral content (inorganic portion) of all the hard tissues of the body is mainly in the form of Calcium hydroxyapatite crystals, Ca10(PO4)6(OH)2.
When calcium phosphate deposition is initiated, the crux is then to control spontaneous precipitation from tissue fluids supersaturated in calcium and phosphate ions and to limit it to well-defined sites. Formative cells achieve this by creating microenvironments that facilitate mineral ion handling and by secreting proteins that stabilize calcium and phosphate ions in body fluids and/or control their deposition onto a receptive extracellular matrix.
The synthetic cells achieve this property by secreting proteins that stabilize Calcium and Phosphate in the body fluids and control their deposition onto the extracellular matrix. These proteins are:
1. Salivary proteins
2. Enamel matrix protein
3. Dentin, cementum, and bone matrix proteins.
Histologically, the lesion shows a highly vascular proliferation that resembles granulation tissue.
Numerous small and larger endothelium-lined channels are formed that are engorged with red blood cells. These vessels sometimes are organized in lobular aggregates, and may be called as lobular capillary haemangioma.
The surface is usually ulcerated and replaced by a thick fibrinopurulent membrane.
A mixed inflammatory cell infiltrate of neutrophils, plasma cells, and lymphocytes is evident.
Neutrophils are most prevalent near the ulcerated surface; chronic inflammatory cells are found deeper in the specimen.
It is also called Oral Fibroma or Irritational Fibroma or Focal Fibrous Hyperplasia.
Fibroma is a benign neoplasm of fibrous connective tissue origin.
It is characterized by excessive proliferation of fibroblast cells with synthesis of large amount of collagen.
Although a large number of fibrous over-growths are found inside the oral cavity, most of these are reactive lesions occurring as a result of trauma or local irritation and therefore true fibromas are extremely rare.
Jain G et al (2017) stated that traumatic irritants include calculi, foreign bodies, overhanging margins, restorations, margins of caries, chronic biting, sharp spicules of bones, and overextended borders of appliances. Fibroma, a benign neoplasm of fibroblastic origin, is reactive in nature and represents a reactive hyperplasia of fibrous connective tissue in response to local irritation or trauma rather than being a true neoplasm.
8 th edition TNM classification and significance of depth of invasionishita1994
Diagnosis of oral cancer is completed for:
Initial diagnosis
Staging
Treatment planning
A complete history, and clinical examination is first completed, then a wedge of tissue is cut from the suspicious lesion for tissue diagnosis. In this procedure, the surgeon cuts all, or a piece of the tissue, to have it examined under a microscope by a pathologist.
Leukoplakia can be defined as a “white patch” or “plaque” in the oral cavity, which cannot be scrapped off and which cannot be characterized clinically or pathologically as any other disease.
This excludes lesions such as lichen planus, candidiasis, leukoedema, white spongy nevus, and obvious frictional keratosis.
The term leukoplakia should be used to recognise white plaques of questionable risk having excluded (other) known diseases or disorders that carry no risk for cancer-WHO 2005.
Mandibular central incisors are two in number
Mandibular central incisor and lateral are similar in anatomy and complement each other in function
They are smaller than the maxillary central incisors
Mandibular central incisor erupts between the age of 7 and 8 years
First tooth from the midline in each lower quadrant
Depth of invasion in oral squamous cell carcinomaishita1994
It is the most common malignant epithelial tissue neoplasm of the oral cavity.
It is derived from the stratified squamous epithelium.
Since oral squamous cell carcinomas constitute bulk of the oral malignancies (above 90 %) it is thus commonly referred to as Oral Cancer.
Tuberculosis is a disease characterized by granulomatous lesions caused by Mycobacterium Tuberculosis. A German scientist Robert Koch discovered the causative organism of TB in 1882.
Since time immemorial, it has been a global health problem. TB has shown a decline in its prevalence globally; however, it is still highly prevalent in Asian countries.
TB is usually overlooked in the differential diagnosis of oral lesions as it is supposed to be a rare entity.
Oral manifestations of TB occur either due to infected sputum or due to hematogenous spread.
TB is an age old disease and has been known to mankind for thousands of years.
Role of human papillomavirus and tumor suppressor genesishita1994
Oral cancer is synonymous to Squamous Cell Carcinoma (SCC) of oral mucosal origin that accounts for more than 90% of all malignant presentations at the aforementioned anatomical sites.
More than 300,000 new cases worldwide are being diagnosed with oral SCC (OSCC) annually.
Approximately, 30,000 (US) & 40,000(EUROPE).
Oral cancer is estimated by the WHO to be the 8th most common cancer worldwide.
In India & other Asian countries, oral & oropharyngeal carcinomas (OCs) comprise up to half of all malignancies, with this particularly high prevalence being attributed to the influence of carcinogens & region-specific epidemiological factors, especially tobacco & betel quid chewing.
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.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
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An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
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Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
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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.
2. ELECTRIC CIRCUIT
• Electric circuit is the path in which electric current flows
from a source across various components.
• Electric circuit diagram is the diagrammatic representation
of an electric circuit.
3.
4. ELECTRIC COMPONENTS
• The various parts/elements that are used to make an electric
circuit are called electric components.
• EXAMPLE–cell, battery, connecting wires, bulb, switch,
etc.
• Battery is a combination of two or more cells.
6. ELECTRIC SYMBOLS
• As it is cumbersome to show the electric components in a
circuit diagram, they are denoted or represented by specific
symbols . These are known as electric symbols.
7.
8. HEATING EFFECTS OF ELECTRIC
CURRENT
• Water heaters (geysers), electric irons, room heaters, etc. are
some electric devices in which heat is produced.
• Electricity produces heat, i.e. part of the electric energy is
converted into heat energy. This is called heating effects of
electric current.
10. HEATING ELEMENTS
• All appliances which produce on passing electricity are based
on the principle that heat is produced when electricity is
passed through a wire. This wire or coil of wire is known as
element/heating element.
• The amount of produced in a wire depends on the length
,thickness and the material of the wire.
11. • Good conductors are those which allow electricity to pass
through them.
• The amount of heat produced depends on how good or poor a
conductor the material of wire is.
• More heat is produced if the material of wire is nota
conductor.
• Hence ,heating elements are made up of materials which
have low conductivity or high resistance.
12. • Common materials used for heating element are tungsten and
nichrome.
• Nichrome is a material made up of nickel , iron and
chromium.
• The filament of an incandescent bulb is made up of tungsten.
• for this reason ,connecting wires , which are made up of
material like copper are not hot to touch.
14. EFFICIENCY OF ELECTRICAL APPLIANCES
• When electrical energy is partly converted into heat energy ,
it leads to wastage of energy in machines and appliance
where the heat is not utilised.
• Stars on electrical appliances indicate the efficiency or rating
of the appliances. More the number of stars , less is the
wastage of electrical energy.
15.
16. HOUSEHOLD SAFETY DEVICES
• There are two types of household devices:
1. Fuse
2. MCB(miniature circuit breaker)
18. 1. FUSE- a fuse is a household safety device which is based on
the principle of heating effects of electricity. A fuse consists of
a wire that breaks when high electricity is passed through it.
This can break can the circuit and prevent the current from
entering devices and causing damage to the devices and
possible fire.
2. MCB-MCBs are also safety devices used in households. Like
fuses ,MCBs too break the circuit or go off automatically by
overload in the circuit.
19. MAGNETIC EFFECTS OF ELECTRICITY
• A conducting wire behaves like a magnet when electricity is
passed through it and hence the needle in the magnetic
compass gets deflected.
• Factors on which magnetic effect of electric current depends-
1. It is directly proportional to the number of turns in the
coil.
2. It is directly proportional to the amount of current.
22. • USES-
1. They are used in devices and appliances like motors
,generators ,and loudspeakers ,hard disks , MRI machines
,etc.
2. They are used in magnetic levitation by which an object is
suspended with no support other than magnetic fields.
3. They are used for separating iron materials from junk. They
are used in separation of iron from ore.
4. They are used to magnetise and make permanent magnets.
23. ELECTRIC BELL
• An electric bell is based on the principle of electromagnetism.
24.
25. • CONSTRUCTION-
1. An electric bell consists of a curved iron rod mounted on a metallic strip ,a
switch , a hammer , a gong and a source of electricity.
2. The connecting wire is wounded over the iron rod so that it behaves like an
electromagnet when current passes through it.
3. One end of the wire is connected to a contact screw through a switch and a
source of electricity.
4. The end of the wire is connected to the lower end of the hammer, which is
called armature. This armature rests on the contact screw and a metallic gong
is placed in front of the hammer.
26. • WORKING-
1. When the switch is pressed on ,the current flows through the wire and the iron
rod becomes an electromagnet.
2. The electromagnet attracts the armature , and as the armature moves towards
the gong, it strikes the gong to produce sound.
3. Meanwhile, the connection between the armature and the contact screw breaks
,resulting in a break in the circuit.
4. Because of this ,the iron rod ceases to be an electromagnet and the armature
returns to the original position.
5. This process is repeated till the time he switch is kept in the on position.