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calculi    
n. 微积分学,结石

微积分学,结石

Calculus \Cal"cu*lus\, n.; pl. {Calculi}. [L, calculus. See
{Calculate}, and {Calcule}.]
1. (Med.) Any solid concretion, formed in any part of the
body, but most frequent in the organs that act as
reservoirs, and in the passages connected with them; as,
biliary calculi; urinary calculi, etc.
[1913 Webster]

2. (Math.) A method of computation; any process of reasoning
by the use of symbols; any branch of mathematics that may
involve calculation.
[1913 Webster]

{Barycentric calculus}, a method of treating geometry by
defining a point as the center of gravity of certain other
points to which co["e]fficients or weights are ascribed.


{Calculus of functions}, that branch of mathematics which
treats of the forms of functions that shall satisfy given
conditions.

{Calculus of operations}, that branch of mathematical logic
that treats of all operations that satisfy given
conditions.

{Calculus of probabilities}, the science that treats of the
computation of the probabilities of events, or the
application of numbers to chance.

{Calculus of variations}, a branch of mathematics in which
the laws of dependence which bind the variable quantities
together are themselves subject to change.

{Differential calculus}, a method of investigating
mathematical questions by using the ratio of certain
indefinitely small quantities called differentials. The
problems are primarily of this form: to find how the
change in some variable quantity alters at each instant
the value of a quantity dependent upon it.

{Exponential calculus}, that part of algebra which treats of
exponents.

{Imaginary calculus}, a method of investigating the relations
of real or imaginary quantities by the use of the
imaginary symbols and quantities of algebra.

{Integral calculus}, a method which in the reverse of the
differential, the primary object of which is to learn from
the known ratio of the indefinitely small changes of two
or more magnitudes, the relation of the magnitudes
themselves, or, in other words, from having the
differential of an algebraic expression to find the
expression itself.
[1913 Webster]


Calculi \Cal"cu*li\, n. pl.
See {Calculus}.
[1913 Webster]



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  • Urinary Calculi - Urology - Merck Manual Professional Edition
    Up to 19% of men and 10% of women will develop a urinary calculus by age 70 (2) Calculi vary from microscopic crystalline foci to calculi several centimeters in diameter A large calculus, called a staghorn calculus, can fill an entire renal calyceal system
  • Kidney stones - Symptoms and causes - Mayo Clinic
    Kidney stones are hard objects made of minerals and salts in urine They form inside the kidneys You may hear healthcare professionals refer to kidney stones as renal calculi, nephrolithiasis or urolithiasis Kidney stones have various causes These include diet, extra body weight, some health conditions, and some supplements and medicines
  • calculi - 搜索 词典
    1 There have been a number of reports on bladder calculi in women with a history of gynecologic procedures 因 妇产科 手术 或 治疗 行为 以及 其他 骨盆 手术 而 造成 女性 膀胱 结石, 在 许多 报告 中 已 明 载。
  • Kidney Stones: Causes, Symptoms, Diagnosis Treatment
    What are kidney stones? Kidney stones are solid masses or crystals that form from substances (like minerals, acids and salts) in your kidneys They can be as small as a grain of sand or — rarely — larger than a golf ball Kidney stones are also called renal calculi or nephrolithiasis
  • Nephrolithiasis: What Is It, Types, Signs and Symptoms, Diagnosis | Osmosis
    Nephrolithiasis, also known as kidney stones or renal calculi, refers to the presence of stones within the kidneys It is one of the most common kidney diseases in adults
  • Calculi: A Detailed Guide to Their Formation, Types, Clinical . . . - DoveMed
    Calculi, commonly known as stones, are solid particles that form in various parts of the body, primarily in the urinary and biliary systems These stones vary in size, composition, and location, leading to a range of clinical symptoms and complications
  • Urinary Stones - Department of Urology
    Urinary calculi, solid particles in the kidneys, bladder, or ureter, are of various chemical compositions — calcium oxalate, calcium phosphate, uric acid, cystine, and struvite
  • Nephrolithiasis: Background, Anatomy, Pathophysiology
    Nephrolithiasis specifically refers to calculi in the kidneys, but renal calculi and ureteral calculi (ureterolithiasis) are often discussed in conjunction The majority of renal calculi
  • EAU Guidelines on Urolithiasis - INTRODUCTION - Uroweb
    The European Association of Urology (EAU) Urolithiasis Guidelines Panel has prepared these guidelines to help urologists assess evidence-based management of stones calculi in the urinary tract and incorporate recommendations into clinical practice
  • Characteristics of Calculi in the Urinary Tract - PMC
    At the age of 35 to 55 years the incidence of a calcium type of calculi was 51 52%, the frequency of the infectious type of calculi was 49 60%, and the prevalence of other types of stones was 46 66%





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